Worldwide distributor of NSN parts and consumables located in the USA.
A compound designed primarily for steam gun cleaning of grease and oil from metal surfaces. It is also used for cleaning anodized or other surface coating prior to application of primer and for tank cleaning of metal prior to anodizing. When of a single specific chemical, use specific chemical name.
The last inventory check on this NSN was done on 04/30/2024. Due to rapid changes in inventory this may not be the current stock qty.
Send us a request for quote using the form below. Our team will contact you with an up to date pricing and availability quote ASAP.
Cleaning preparations
Surface-active washing or cleaning preparations, n.E.S., not put up for retail sale
Toiletries and cosmetics
Y - Indicates information is in the hazardous materials information resource system (hmirs).
PMICA - Item does not contain precious metal.
CRITL- The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Questions & Answers: |
|
What are the historical prices recorded for this stock number? | |
Historical data shows pricing from $575.10 to $958.50.. | |
Does NSN 6850-00-753-5000 have a shelf life? | |
No. There is no shelf life applicable for this NSN. | |
What NATO entities are users of this NSN? | |
Department Of The Army, Department Of The Air Force, Department Of The Navy, General Services Administration, Brazil, Spain, Singapore, Australia, Republic Of Korea, Portugal, Italy, Greece, and Turkey | |
What is the NIIN of NSN 6850-00-753-5000? | |
007535000 or 00-753-5000 | |
Does NSN 6850-00-753-5000 require demilitarization? | |
Yes - ITAR Controlled | |
What is the most recent solicitation for NSN 6850-00-753-5000? | |
No solicitations for this NSN. | |
When was this national stock number assigned to the federal catalog? | |
Jan 01, 1962 |
Effects of overexposure: skin & eye burns,irrit.
First aid: inhal: rmv to fresh air. If not brthng give cpr; if brthng
diff give oxygen. Eye: immed flush w/plenty of water. Skin: wash
w/soap & water. Rmv contam clthg & shoes. Ingest: do not induce
vomit. Nothg by mouth if unconsc. Get medical attn.
Hcc: b1
boiling pt: >149.C, 300.2f
vapor density: 1
spec gravity: 1.2
solubility in water: appreciable
appearance and odor: thick liquid, color n/k, mild odor
percent volatiles by volume: 60
Stability indicator/materials to avoid: yes
acids
stability condition to avoid: none specified by mfg
hazardous decomposition products: none specified by mfg.
Waste disposal methods: dispose i/a/w all local, state & federal
regulations.
disclaimer (provided with this information by the compiling agencies):
this information is formulated for use by elements of the department
of defense. the united states of america in no manner whatsoever,
expressly or implied, warrants this information to be accurate and
disclaims all liability for its use. any person utilizing this
document should seek competent professional advice to verify and
assume responsibility for the suitability of this information to their
particular situation.
Ingred name: sodium silicate (cas #6834-92-0) (20-30)
cas: 6834-92-0
rtecs #: vv9275000
fraction by wt: 25%
ingred name: potassium hydroxide (sara iii)
cas: 1310-58-3
rtecs #: tt2100000
fraction by wt: 7.5%
osha pel: c, 2 mg/m3
acgih tlv: c 2 mg/m3; 9192
epa rpt qty: 1000 lbs
dot rpt qty: 1000 lbs
First aid: in case of skin or eye contact, flush w/water.See physician
fi irritation persists.
Hcc: n1
boiling pt: b.P. Text: 218f 102c
spec gravity: 1.32
solubility in water: complete
appearance and odor: off-white to light amber; slight ammoniacal odor
Stability indicator/materials to avoid: yes
Waste disposal methods: determined by pollution standards
disclaimer (provided with this information by the compiling agencies):
this information is formulated for use by elements of the department
of defense. the united states of america in no manner whatsoever,
expressly or implied, warrants this information to be accurate and
disclaims all liability for its use. any person utilizing this
document should seek competent professional advice to verify and
assume responsibility for the suitability of this information to their
particular situation.
Ingred name: cleaning compound, liquid
Effects of overexposure: mild irritant to eyes & skin.
First aid: wash skin w/water.Immediately flush eyes w/water for 15
minutes.Consult physician.
Hcc: b3
boiling pt: b.P. Text: 213f
spec gravity: 1.4
solubility in water: complete
appearance and odor: very light amber liquid,mild sweet odor
percent volatiles by volume: 60
Stability indicator/materials to avoid: yes
Waste disposal methods: discard absorbed material w/general
trash.Dispose in accordance w/local,state,& federal regulations.
disclaimer (provided with this information by the compiling agencies):
this information is formulated for use by elements of the department
of defense. the united states of america in no manner whatsoever,
expressly or implied, warrants this information to be accurate and
disclaims all liability for its use. any person utilizing this
document should seek competent professional advice to verify and
assume responsibility for the suitability of this information to their
particular situation.
Ingred name: sodium xylene sulphonate
cas: 1330-72-7
rtecs #: ze5100000
fraction by wt: 1%
ingred name: sodium carbonate
cas: 497-19-8
rtecs #: vz4050000
fraction by wt: 1%
ingred name: tetrapotassium pyrophosphate
fraction by wt: 25%
ingred name: potassium hydroxide (sara iii)
cas: 1310-58-3
rtecs #: tt2100000
fraction by wt:
osha pel: c, 2 mg/m3
acgih tlv: c 2 mg/m3; 9192
epa rpt qty: 1000 lbs
dot rpt qty: 1000 lbs
ingred name: sodium silicate
cas: 6834-92-0
rtecs #: vv9275000
fraction by wt: 5%
Reports of carcinogenicity: ntp: no iarc: no osha: no
health hazards acute and chronic: skin: irritation and/or dermatitis.
eyes: irritation or burning. Inhalation: ex-cessive inhalation of
mist or spray may cause damage to upper respiratory tract and even
to lung tissue. Ingestion can cau se severe burns and tissue
perforation.
effects of overexposure: irritation/burns to skin, eyes. Dermatitis.
medical cond aggravated by exposure: none known
First aid: if splashed on the skin, flush with water. If skin becomes
red, treat with olive oil or lanolin ointment. If splashed in the
eyes, flush with water. Then rinse with 5% boric acid solution (eye
wash su ch as colyreun is suggested). If swallowed, do not induce
vomiting, give large amount of diluted 1% acetic acid or
vinegar(1: 4), or lemon juice. Follow with milk, get medical
attention immediately.
Hcc: b1
boiling pt: b.P. Text: 218f,103c
melt/freeze pt: m.P/f.P text: 32.0f,0.0c
vapor density:
spec gravity: 1.3-1.4
ph: 11.4
evaporation rate & reference: < 1 (water=1)
solubility in water: complete
appearance and odor: light amber, near odorless liquid
Stability indicator/materials to avoid: yes
organic materials and strong acids
stability condition to avoid: contact with strong acids
Waste disposal methods: dispose in accordance with 42usg3251 et.Seq.
rcra 1976 and any local, state and federal regulations.Disposal
recommendations apply to the original material & its container; not
any materials which are a waste by product of the user's
operation.
disclaimer (provided with this information by the compiling agencies):
this information is formulated for use by elements of the department
of defense. the united states of america in no manner whatsoever,
expressly or implied, warrants this information to be accurate and
disclaims all liability for its use. any person utilizing this
document should seek competent professional advice to verify and
assume responsibility for the suitability of this information to their
particular situation.
Ingred name: potassium hydroxide (sara iii)
cas: 1310-58-3
rtecs #: tt2100000
fraction by wt:
other rec limits: none specified by m.
osha pel: c, 2 mg/m3
acgih tlv: c 2 mg/m3; 9192
epa rpt qty: 1000 lbs
dot rpt qty: 1000 lbs
Routes of entry: inhalation: no skin: yes ingestion: no
health hazards acute and chronic: skin contact may cause irrition upon
prolonged or repeated contact. eyes: contact with eyes
will cause irritation.
explanation of carcinogenicity: na
effects of overexposure: eyes: possible irritation and redness.
skin: prolonged contact may cause
dryness.
medical cond aggravated by exposure: cuts and abrasions
First aid: eyes: flush with water for 15 min., if irritation persists,
consult a physician.Skin: flush with water for 15 min., if
irritation persists, consult a physician.Inhalation: remove to
fresh air. Andinge stion: drink large quantities of milk/water,
consult a physcian immediately.
Hcc: b1
boiling pt: b.P. Text: 212 f
vapor pres: na
vapor density: na
spec gravity: 1.14
ph: 10.5
evaporation rate & reference: na
solubility in water: complete
appearance and odor: dark amber liquid with a mild odor
percent volatiles by volume: neg
Stability indicator/materials to avoid: yes
strong acids and/or oxidizing materials
hazardous decomposition products: na
Waste disposal methods: dispose of in accordance with local, state and
federal epa regulations.
disclaimer (provided with this information by the compiling agencies):
this information is formulated for use by elements of the department
of defense. the united states of america in no manner whatsoever,
expressly or implied, warrants this information to be accurate and
disclaims all liability for its use. any person utilizing this
document should seek competent professional advice to verify and
assume responsibility for the suitability of this information to their
particular situation.
Ingred name: non-hazardous ingredients
Ld50 lc50 mixture: none specified by manufacturer.
routes of entry: inhalation: no skin: yes ingestion: no
reports of carcinogenicity: ntp: no iarc: no osha: no
health hazards acute and chronic: skin contact may cause irritation upon
prolonged or repeated contact. Eye contact will cause irritation.
explanation of carcinogenicity: product contains no materials currently
classified as carcinogenic by ntp, osha or iarc.
effects of overexposure: eyes: possible irritation and redness. Skin:
prolonged contact may cause dryness, irritation and redness.
medical cond aggravated by exposure: cuts, abrasions and dermatitis.
First aid: eyes: flush with water for 15 minutes. Consult physician.
skin: wash with soap and water. If irritation persists, consult a
physician. Inhalation: remove to fresh air. Ingestion: drink large
quantitie s of milk/water. Consult physician immediately.
Hcc: n1
boiling pt: b.P. Text: 212f,100c
vapor pres: = water
spec gravity: 1.140
ph: 10.5
evaporation rate & reference: equal to water
solubility in water: complete
appearance and odor: dark amber liquid with a mild odor
percent volatiles by volume: 60 %
Stability indicator/materials to avoid: yes
strong oxidizing agents, strong acids.
stability condition to avoid: extremely high temperatures. Keep from
freezing.
hazardous decomposition products: none specified by manufacturer.
Waste disposal methods: dispose of in accordance with local, state and
federal regulations.
disclaimer (provided with this information by the compiling agencies):
this information is formulated for use by elements of the department
of defense. the united states of america in no manner whatsoever,
expressly or implied, warrants this information to be accurate and
disclaims all liability for its use. any person utilizing this
document should seek competent professional advice to verify and
assume responsibility for the suitability of this information to their
particular situation.
Ingred name: fatty acid soap
other rec limits: none specified
ingred name: silicate
other rec limits: none specified
ingred name: alkylaryl polyether
other rec limits: none specified
ingred name: tar acids, cresylic,phenyl,phosphate
cas: 68952-35-2
other rec limits: none specified
ingred name: water
cas: 7732-18-5
rtecs #: zc0110000
other rec limits: none specified
ingred name: alkylaryl sulfonate
rtecs #: az8400000
other rec limits: none specified
ingred name: edta-type chelate
other rec limits: none specified
Routes of entry: inhalation: yes skin: yes ingestion: yes
reports of carcinogenicity: ntp: no iarc: no osha: no
health hazards acute and chronic: skin irritation and/or dermatitis; eye
irritation or burning. Inhalation: excessive inhalation of mist or
spray may cause damage to upper respiratory tract and even to lung
tissue. Ingestion: can caus e severe burns and tissue perforation.
effects of overexposure: skin or eye irritation
medical cond aggravated by exposure: pre-existing respiratory/lung
disease
First aid: if splashed on skin, rinse with water. If it turns red, treat
with olive oil or lanolin ointment. (if splashed in eyes, flush
with water, then rinse with 5% boric acid solution (eye wash such
as colyr eum is suggested). If accidentally swallowed, do not
induce vomiting, give large amounts of diluted 1% acetic acid,
vinegar 1: 4 or lemon juice. Follow with milk. Get medical attention
immediately.
Hcc: b1
boiling pt: b.P. Text: 218f,103c
melt/freeze pt: m.P/f.P text: 32.0f,0.0c
vapor density:
spec gravity: 1.3-1.4 (h2o=1)
ph: 10-11
evaporation rate & reference:
solubility in water: complete
appearance and odor: light amber, near odorless
Stability indicator/materials to avoid: yes
strong acids
stability condition to avoid: oxidizable materials
hazardous decomposition products: none known
Waste disposal methods: dispose of in accordance with 42usg3251 et. Seq.
rcra 1976 & any local, state & federal regulations. Disposal
recommendations apply to original material & its container; not any
materials which are wa ste by products of user's operation.
disclaimer (provided with this information by the compiling agencies):
this information is formulated for use by elements of the department
of defense. the united states of america in no manner whatsoever,
expressly or implied, warrants this information to be accurate and
disclaims all liability for its use. any person utilizing this
document should seek competent professional advice to verify and
assume responsibility for the suitability of this information to their
particular situation.
Ingred name: potassium hydroxide (sara iii)
cas: 1310-58-3
rtecs #: tt2100000
fraction by wt:
other rec limits: none specified
acgih tlv: 2 mg/m3
epa rpt qty: 1000 lbs
dot rpt qty: 1000 lbs
Ld50 lc50 mixture: ld50 (oral, rat) is unknown.
routes of entry: inhalation: no skin: no ingestion: yes
reports of carcinogenicity: ntp: no iarc: no osha: no
health hazards acute and chronic: target organs: eyes, skin, respiratory
& gi tracts. Acute- corrosive. Eyes/skin: severe irritation,
chemical burns. May cause blurred vision. Inhalation: could cause
irritation, burning sensation, coughi ng. Ingestion: harmful if
swallowed. Maycause burns of gastrointestinal tract if ingested.
chronic- irritation.
explanation of carcinogenicity: none
effects of overexposure: irritation, burns, coughing, blurred vision
medical cond aggravated by exposure: individuals with pre-existing skin
disorders or eye problems may be more succeptible to the effects
from exposure to this product.
First aid: get medical attention if symptoms persist. Skin: immediately
flush with plenty of water for 15 minutes while removing
contaminated clothing. Eye: immediately flush with water for 15
minutes, holding eye lids open. Call physician. Inhaled: remove to
fresh air. Oral: do not induce vomiting. If conscious, drink 1-2
glasses of water. Call a physician or poison control center
immediately.
Hcc: b1
nrc/state lic num: not relevant
boiling pt: b.P. Text: >220f,>104c
melt/freeze pt: m.P/f.P text:
vapor pres: 20
vapor density: 1
spec gravity: 1.2
ph: >12
evaporation rate & reference: 1 (water=1)
solubility in water: complete
appearance and odor: thick liquid - mild odor
percent volatiles by volume: 30
Stability indicator/materials to avoid: yes
strong acids, aluminum and reactive metals
stability condition to avoid: none
hazardous decomposition products: none
Waste disposal methods: discharge, treatment or disposal may be subject
to federal, state or local regulations. Neutralize and flush to
sewer with large amount of water, if permitted. For large amounts,
contract with a licen sed chemical disposal agency.
disclaimer (provided with this information by the compiling agencies):
this information is formulated for use by elements of the department
of defense. the united states of america in no manner whatsoever,
expressly or implied, warrants this information to be accurate and
disclaims all liability for its use. any person utilizing this
document should seek competent professional advice to verify and
assume responsibility for the suitability of this information to their
particular situation.
Ingred name: potassium hydroxide (cercla)
cas: 1310-58-3
rtecs #: tt2100000
fraction by wt: 5%
other rec limits: none recommended
osha pel: c 2 mg/m3
acgih tlv: c 2 mg/m3; 9495
epa rpt qty: 1000 lbs
dot rpt qty: 1000 lbs
Routes of entry: inhalation: yes skin: yes ingestion: no
reports of carcinogenicity: ntp: no iarc: no osha: no
health hazards acute and chronic: eyes: contact w/dust or solution may
cause chemical burns, possible permanent damage. Skin: possible
severe irrit, chemical burns, permanent tissue damage. Inhaling
mist may cause moderate to severe r esp tract irrit, possible
permanent damage. Ingest: severe irrit, possible gi tract damage.
effects of overexposure: eyes: moderate to severe irri. Skin: moderate
to severe irri, drying, defat, readily absorbed through skin in
toxic amts. Inhal: moderate irri, dizz, headache. Mist: severe
respiratory irri, nausea. A nd ingestion: severe irri to
gastrointestinal tract, nausea.
medical cond aggravated by exposure: no known chronic effects that
differ from acute effects. *conscious give lots milk/water. Ged
immed med aid. If unconscious, don't induce vomiting/give anything
by mouth.
First aid: eye: speed essential! Immed flush w/lots water 5 min. Follow
w/normal salene 30-60 min. Hold lids apart. Get immed med aid.
skin: speed essential! Flush w/lots water until slippery feel gone;
>15. If irrit/blistering get med aid. Inhal: get fresh air. If
trouble breathing give oxygen. Get med aid if irrit persists.
ingest: don't induce vomiting except on advice of competent med
personnel. If*
Hcc: n1
boiling pt: b.P. Text: 215f,102c
vapor pres: 20.0
vapor density: > 1
spec gravity: 1.33
ph: 13.5cn
evaporation rate & reference:
solubility in water: complete
appearance and odor: pale yellow liquid, mild odor
percent volatiles by volume: 75.0
Stability indicator/materials to avoid: yes
strong oxidizing materials
stability condition to avoid: contact w/strong acids, reactive metals,
organic materials.
hazardous decomposition products: none
Waste disposal methods: conc: trans to reclaiming center for
recycling/reuse, or to licensed haz waste treatmnt/dispos site for
disposition under applic regs. Solution/rinses: as above or
neutralize/separate floatable soil. remove resid organic matter by
oxiation/carbon**
disclaimer (provided with this information by the compiling agencies):
this information is formulated for use by elements of the department
of defense. the united states of america in no manner whatsoever,
expressly or implied, warrants this information to be accurate and
disclaims all liability for its use. any person utilizing this
document should seek competent professional advice to verify and
assume responsibility for the suitability of this information to their
particular situation.
Ingred name: potassium hydroxide (cercla)
cas: 1310-58-3
rtecs #: tt2100000
fraction by wt:
other rec limits: none recommended
osha pel: 2 mg/m3 ceiling
acgih tlv: 2 mg/m3 ceiling
epa rpt qty: 1000 lbs
dot rpt qty: 1000 lbs
ingred name: tetrapotassium pyrophoshate
cas: 7320-34-5
rtecs #: jl6735000
fraction by wt: 25.0%
other rec limits: none recommended
ingred name: potassium silicate
cas: 1312-76-1
fraction by wt:
other rec limits: none recommended
ingred name: tetrapotasium ethylenediaminetetraacetate
cas: 5964-35-2
fraction by wt:
other rec limits: none recommended
ingred name: water (non haz.)
cas: 7732-18-5
rtecs #: zc0110000
other rec limits: none recommended
ingred name: urea
cas: 57-13-6
rtecs #: yr6250000
other rec limits: none recommended
Routes of entry: inhalation: yes skin: yes ingestion: yes
reports of carcinogenicity: ntp: no iarc: no osha: no
health hazards acute and chronic: skin irritation and/or dermatitis; eye
irritation or burning. Inhalation: excessive inhalation of mist or
spray may cause damage to upper respiratory tract and even to lung
tissue. Ingestion: can caus e severe burns and tissue perforation.
effects of overexposure: skin or eye irritation
medical cond aggravated by exposure: pre-existing respiratory/lung
disease
First aid: if splashed on skin, rinse with water. If it turns red, treat
with olive oil or lanolin ointment. (if splashed in eyes, flush
with water, then rinse with 5% boric acid solution (eye wash such
as colyr eum is suggested). If accidentally swallowed, do not
induce vomiting, give large amounts diluted 1% acetic acid, vinegar
1: 4 or lemon juice. Follow w/milk. Get med aid immediately.
Hcc: b3
boiling pt: b.P. Text: 218f,103c
melt/freeze pt: m.P/f.P text: 32.0f,0.0c
vapor density:
spec gravity: 1.3-1.4 (h2o=1)
ph: 10.8
evaporation rate & reference:
solubility in water: complete
appearance and odor: light amber, near odorless
Stability indicator/materials to avoid: yes
strong acids
stability condition to avoid: oxidizable materials
hazardous decomposition products: none known
Waste disposal methods: dispose of in accordance with 42usg3251 et. Seq.
rcra 1976 & any local, state & federal regulations. Disposal
recommendations apply to original material & its container; not any
materials which are wa ste by products of user's operation.
disclaimer (provided with this information by the compiling agencies):
this information is formulated for use by elements of the department
of defense. the united states of america in no manner whatsoever,
expressly or implied, warrants this information to be accurate and
disclaims all liability for its use. any person utilizing this
document should seek competent professional advice to verify and
assume responsibility for the suitability of this information to their
particular situation.
Ingred name: potassium hydroxide (sara iii)
cas: 1310-58-3
rtecs #: tt2100000
fraction by wt:
other rec limits: none specified
acgih tlv: 2 mg/m3
epa rpt qty: 1000 lbs
dot rpt qty: 1000 lbs
Routes of entry: inhalation: yes skin: yes ingestion: yes
reports of carcinogenicity: ntp: no iarc: no osha: no
health hazards acute and chronic: skin contact may cause irrition upon
prolonged or repeated contact. Eyes: contact with eyes will cause
irritation.
effects of overexposure: eyes: possible irritation and redness. Skin:
prolonged contact may cause dryness. Irrit/redness.
medical cond aggravated by exposure: cuts and abrasions, dermatitis.
First aid: eyes: flush with water for 15 min. Consult a physician.Skin:
flush w/water/soap. If irritation persists, consult a physician.
inhalation: remove to fresh air. Ingestion: drink large quantities
of milk /water, call dr.
Hcc: b3
boiling pt: b.P. Text: 212 f
vapor pres: as water
vapor density: not est.
spec gravity: 1.14
ph: 10.5
evaporation rate & reference: as water
solubility in water: complete
appearance and odor: dark amber liquid with a mild odor
percent volatiles by volume: 60.0
Stability indicator/materials to avoid: yes
strong acids and/or oxidizing materials
hazardous decomposition products: na
Waste disposal methods: dispose of in accordance with local, state and
federal regulations.
disclaimer (provided with this information by the compiling agencies):
this information is formulated for use by elements of the department
of defense. the united states of america in no manner whatsoever,
expressly or implied, warrants this information to be accurate and
disclaims all liability for its use. any person utilizing this
document should seek competent professional advice to verify and
assume responsibility for the suitability of this information to their
particular situation.
Ingred name: non-hazardous ingredients
Ld50 lc50 mixture: not provided
routes of entry: inhalation: yes skin: yes ingestion: yes
health hazards acute and chronic: inhalation: acute: high hazard,
effects: absorbed by lungs, includes narcosis, dizziness & nausea.
chronic: low hazard. Effects: irritating to lungs. Skin contact:
acute: high hazard, effects: corrosi ve to skin. Will cause
chemical burns & scarring. Irritation & reddening of skin for short
term. Chronic: moderate hazard, effects: dermatitis may occur. Skin
absorption: acute: high hazard, effects: same as skin contact.
chronic: low hazard, effects: no evidence of skin absorption. Eye:
acute: high hazard, effects: immediately corrosive to eyes.
chronic: slight hazard. Effects: pain prevents chro nic effects.
explanation of carcinogenicity: not provided
effects of overexposure: see health effects acute & chronic
medical cond aggravated by exposure: not provided
First aid: eyes: flush with water for at least 15 minutes. Consult
physician immediately. Skin: wash with soap & water. Inhalation:
remove to fresh air. Give oxygen if needed. Ingestion: do not
induce vomiting. consult physician immediately.
Hcc: b1
boiling pt: =104.4c, 220.F
melt/freeze pt:
vapor pres: 20 mm hg @ 20c
vapor density: 1
spec gravity: 1.3
ph: 12.5 (as is)
evaporation rate & reference: 1
solubility in water: soluble
appearance and odor: clear liquid
percent volatiles by volume: 30%
Sulfides, cyanides, reactive metals & strong alkalis
stability condition to avoid: not provided
hazardous decomposition products: toxic fluorides may be produced during
combustion or high temperatures.
Waste disposal methods: as is the product is a d002 epa hazardous waste
code. Consult federal, state & local regulatory agencies for proper
disposal.
Ingred name: potassium hydroxide
cas: 1310-58-3
rtecs #: tt2100000
= wt: 10.
osha pel: 2 mg/m3
acgih stel: c2 mg/m3
epa rpt qty: 1000 lbs
dot rpt qty: 1000 lbs