Safety data sheet

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STANLEYCHALKSMSDS 
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STANLEYCHALKSMSDS
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DEFINITIONSOFTERMS(Continued)
NATIONAL FIRE PROTECTION ASSOCIATION HAZARD RATINGS
(continued):
HEALTH HAZARD (continued):  2 (continued); Materials whose LD
50
 for acute
dermal toxicity is greater than 200 mg/kg but less than or equal to 1000 mg/kg.
MaterialswhoseLD
50
foracuteoraltoxicityisgreaterthan50mg/kgbutlessthanor
equalto500mg/kg.Anyliquidwhosesaturatedvaporconcentrationat20°C(68°F)
isequaltoorgreaterthanone-fifthitsLC
50
foracuteinhalationtoxicity,ifitsLC
50
is
lessthanorequalto5000ppmandthatdoesnotmeetthecriteriaforeitherdegree
ofhazard3or degreeofhazard4.Compressedliquefiedgases withboilingpoints
between -30°C (-22°F) and -55°C (-66.5°F) that cause severe tissue damage,
dependingondurationofexposure.Materialsthatarerespiratoryirritants.Materials
thatcausesevere,butreversibleirritationtotheeyesorarelachrymators.Materials
that are primary skin irritants or sensitizers. 3 (materials that, under emergency
conditions,cancauseseriousorpermanentinjury):GasesandvaporswhoseLC
50
for
acute inhalation toxicity is greater than 1,000 ppm but less than or equal to 3,000
ppm.  Dusts and mists whose LC
50
 for acute inhalation toxicity is greater than 0.5
mg/Lbutlessthanorequalto2mg/L.MaterialswhoseLD
50
foracutedermaltoxicity
isgreaterthan40mg/kgbutlessthanorequalto200mg/kg.MaterialswhoseLD
50

for acute oral toxicity is greater than 5 mg/kg but less than or equal to 50 mg/kg.
Anyliquidwhosesaturatedvaporconcentrationat20°C(68°F)isequaltoorgreater
thanone-fifthitsLC
50
foracuteinhalationtoxicity,ifitsLC
50
islessthanorequalto
3000ppmandthatdoesnotmeetthecriteriafordegreeofhazard4.Compressed
liquefied gases with boiling points between -30°C (-22°F) and -55°C (-66.5°F) that
cause frostbite and irreversible tissue damage.  Materials that are respiratory
irritants.  Cryogenic gases that cause frostbite and irreversible tissue damage.
Materials that are corrosive to the respiratorytract.  Materialsthat are corrosiveto
the eyes or cause irreversible corneal opacity.  Materials that are corrosive to the
skin.4(materialsthat,underemergencyconditions,canbelethal):Gasesandvapors
whoseLC
50
foracuteinhalationtoxicitylessthanorequalto1,000ppm.Dustsand
mists whose LC
50
 for acute inhalation toxicity is less than or equal to 0.5 mg/L.
Materials whose LD
50
 for acute dermal toxicity is less than or equal to 40 mg/kg.
Materials whoseLD
50
for acute oral toxicityis less than or equal to 5 mg/kg. Any
liquidwhosesaturatedvaporconcentrationat20°C(68°F)isequaltoorgreaterthan
one-fifthitsLC
50
foracuteinhalationtoxicity,ifitsLC
50
islessthanorequalto1000
ppm.
FLAMMABILITY HAZARD
: 0  Materials that will not burn under typical fire
conditions,includingintrinsicallynoncombustiblematerialssuch asconcrete,stone,
andsand:Materialsthatwillnotburninairwhenexposedtoatemperatureof816°C
(1500°F)foraperiodof5minutesinaccordingwithAnnexD.1Materialsthatmust
bepreheatedbeforeignitioncanoccur.Materialsinthisdegreerequireconsiderable
preheating, under all ambient temperature conditions, before ignition and
combustioncanoccur:Materialsthatwillburninairwhenexposedtoatemperature
of816°C (1500°F)for a periodof 5 minutesin accordance withAnnexD.Liquids,
solidsandsemisolidshavingaflashpointatorabove93.4°C(200°F)(i.e.ClassIIIB
liquids).  Liquids with a flash point greater than 35°C (95°F) that do not sustain
combustion when tested using the Method ofTesting for SustainedCombustibility,
per 49 CFR 173, Appendix H or the UN Recommendation on the Transport of
Dangerous Goods, Model Regulations (current edition) and the related Manual of
Tests and Criteria (current edition).  Liquids with a flash point greater than 35°C
(95°F) in a water-miscible solution or dispersion with a water non-combustible
liquid/solidcontentofmorethan85percentbyweight.Liquidsthathavenofirepoint
when tested by ASTM D 92 Standard Test Method for Flash and Fire Points by
Cleveland Open Cup, up to a boiling point of the liquid or up to a temperature at
which the sample being tested shows an obvious physical change.  Combustible
pellets with a representative diameter of greater than 2 mm (10 mesh).  Solids
containinggreaterthan0.5percentbyweightofaflammableorcombustiblesolvent
are rated by the closed up flash point of the solvent. Most ordinary combustible
materials.2Materialsthatmustbemoderatelyheatedorexposedtorelativelyhigh
ambient temperaturesbeforeignitioncan occur. Materials inthisdegreewould not
under normal conditions form hazardous atmospheres with air, but under high
ambient temperatures or under moderate heating could release vapor in sufficient
quantitiestoproducehazardousatmosphereswithair:Liquidshavingaflashpointat
or above 37.8°C (100°F) and below 93.4°C (200°F) (i.e. Class II and Class IIIA
liquids.) Solid materials in the form of powders or coarse dusts of representative
diameterbetween420microns(40mesh)and2mm(10mesh)thatburnrapidlybut
that generally do not form explosive mixtures in air.  Solid materials in fibrous or
shreddedformthatburn rapidlyandcreate flash firehazards, suchascotton,sisal
and hemp.  Solids and semisolids that readily give off flammable vapors.  Solids
containinggreaterthan0.5percentbyweightofaflammableorcombustiblesolvent
areratedbytheclosedcupflashpointofthesolvent.3Liquidsandsolidsthatcan
beignitedunderalmostallambienttemperatureconditions.Materialsinthisdegree
producehazardousatmosphereswithairunderalmostallambienttemperaturesor,
though unaffected by ambient temperatures, are readily ignited under almost all
conditions:  Liquids having a flash point below 22.8°C (73°F) and having a boiling
pointatorabove37.8°C(100°F)andthoseliquidshavingaflashpointatorabove
22.8°C(73°F)andbelow37.8°C(73°F)andbelow37.8°C(100°F)(i.e.ClassIBand
IC liquids).  Materials that, on account of their physical form or environmental
conditions, can form explosive mixtures with air and are readily dispersed in air.
Flammable or combustible dusts with a representative diameter less than 420
microns(40 mesh). Materialsthat burnwithextremerapidity,usuallybyreason of
self-contained oxygen (e.g. dry nitrocellulose and many organic peroxides). Solids
containinggreaterthan0.5percentbyweightofaflammableorcombustiblesolvent
areratedbytheclosedcupflashpointofthesolvent.
NATIONAL FIRE PROTECTION ASSOCIATION HAZARD RATINGS
(continued):
FLAMMABILITY HAZARD (continued): 4  Materials that will rapidly or completely
vaporize at atmospheric pressure and normal ambient temperature or that are
readily dispersed in air and will burn readily:  Flammable gases.  Flammable
cryogenic materials.  Any liquid or gaseous materials that is liquid while under
pressureandhasaflashpointbelow22.8°C(73°F)andaboilingpointbelow37.8°C
(100°F) (i.e. Class IA liquids).  Materials that ignite when exposed to air,  Solids
containinggreaterthan0.5percentbyweightofaflammableorcombustiblesolvent
areratedbytheclosedcupflashpointofthesolvent.
INSTABILITY HAZARD
: 0  Materials that in themselves are normally stable, even
underfire conditions: Materialsthathaveanestimatedinstantaneouspowerdensity
(product of heat of reaction and reaction rate) at 250°C (482°F) below 0.01 W/mL.
Materialsthatdonotexhibitanexothermattemperatureslessthanorequalto500°C
(932°F) when tested by differential scanning calorimetry.   1  Materials that in
themselves are normally stable, but that can become unstable at elevated
temperatures and pressures: Materials that havean estimated instantaneouspower
density (product of heatof reaction and reaction rate) at 250°C (482°F) at or above
0.01W/mLandbelow10W/mL. 2  Materialsthat readily undergo violent chemical
change at elevated temperatures and pressures: Materials that have an estimated
instantaneous power density(productofheat of reactionandreactionrate) at 250°C
(482°F)atorabove10W/mLandbelow100W/mL. 3Materialsthat inthemselves
arecapableofdetonationorexplosivedecompositionorexplosivereaction,butthat
require astronginitiating source orthatmust be heated under confinement before
initiation:  Materialsthathavean estimated instantaneouspower density (productof
heatofreactionandreactionrate)at250°C(482°F)atorabove100W/mLandbelow
1000W/mL. Materialsthataresensitivetothermal ormechanicalshockatelevated
temperaturesand pressures. 4 Materials that in themselves are readily capable of
detonationorexplosivedecompositionorexplosivereactionatnormaltemperatures
andpressures:Materialsthathaveanestimatedinstantaneouspowerdensity(product
of heat of reaction and reaction rate) at 250°C (482°F) of 1000 W/mL or greater.
Materials that are sensitive to localized thermal or mechanical shock at normal
temperaturesandpressures.
FLAMMABILITY LIMITS IN AIR: Much of the information related to fire and
explosionisderivedfromtheNationalFireProtectionAssociation(NFPA).FlashPoint

-Minimumtemperatureatwhichaliquidgivesoffsufficientvaporstoformanignitable
mixture with air.  Autoignition Temperature
:  The minimum temperature required to
initiatecombustioninairwithnoothersourceofignition. LEL
-thelowestpercentof
vaporinair,byvolume,thatwillexplodeorigniteinthepresenceofanignitionsource.
UEL
-thehighestpercentofvaporinair,byvolume,thatwillexplodeorigniteinthe
presenceofanignitionsource.

ECOLOGICALINFORMATION:
ECistheeffectconcentrationinwater.BCF=BioconcentrationFactor,whichisused
todetermineifasubstancewillconcentrateinlifeformswhichconsumecontaminated
plant or animal matter. TL
m
 = median threshold limit; Coefficient of Oil/Water
DistributionisrepresentedbylogK
ow
orlogK
oc
andisusedtoassessasubstance’s
behaviorintheenvironment.
TOXICOLOGICALINFORMATION:
Human and Animal Toxicology:  Possible health hazards as derived from human
data, animal studies, or from the results of studies with similar compounds are
presented.Definitionsofsometermsusedinthissectionare:LD
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-LethalDose(solids
&liquids)whichkills50%oftheexposedanimals;LC
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-LethalConcentration(gases)
which kills 50% of the exposed animals; ppm concentration expressed in parts of
materialpermillionpartsofairorwater;mg/m
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concentrationexpressedinweightof
substancepervolumeofair;mg/kgquantityofmaterial,byweight,administeredtoa
testsubject,basedontheirbodyweightinkg.OthermeasuresoftoxicityincludeTDLo,
thelowestdosetocauseasymptomandTCLothelowestconcentrationtocausea
symptom; TDo, LDLo, and LDo, or TC, TCo, LCLo, and LCo, the lowest dose (or
concentration)tocauselethalortoxiceffects.CancerInformation:Thesourcesare:
IARC - the International Agency for Research on Cancer; NTP - the National
ToxicologyProgram,RTECS-theRegistryofToxicEffectsofChemicalSubstances,
OSHA and CAL/OSHA.  IARC and NTP rate chemicals on a scale of decreasing
potentialtocausehumancancerwithrankingsfrom1to4.Subrankings(2A,2B,etc.)
are also used. Other Information:  BEI - ACGIH Biological Exposure Indices,
representthelevelsofdeterminantswhicharemostlikelytobeobservedinspecimens
collectedfromahealthyworkerwhohasbeenexposedtochemicalstothesameextent
asaworkerwithinhalationexposuretotheTLV.
REGULATORYINFORMATION:
U.S.andCANADA:
ACGIH: American Conference of Governmental Industrial Hygienists, a professional
associationwhichestablishesexposurelimits.
Thissectionexplainstheimpactofvariouslawsandregulationsonthematerial.EPA
is the U.S. Environmental Protection Agency.  NIOSH is the National Institute of
OccupationalSafety andHealth,whichistheresearcharmofthe U.S.Occupational
Safety and Health Administration (OSHA).  WHMIS is the Canadian Workplace
Hazardous Materials InformationSystem. DOT and TC arethe U.S. Departmentof
TransportationandtheTransportCanada,respectively.SuperfundAmendmentsand
Reauthorization Act (SARA); the Canadian Domestic/Non-Domestic Substances List
(DSL/NDSL);theU.S.ToxicSubstanceControlAct(TSCA);MarinePollutantstatus
according to theDOT;the Comprehensive Environmental Response,Compensation,
andLiabilityAct(CERCLAorSuperfund);andvariousstateregulations.Thissection
alsoincludesinformationontheprecautionarywarningswhichappearonthematerial’s
packagelabel.OSHA-U.S.OccupationalSafetyandHealthAdministration.
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