MATERIAL SAFETY DATA SHEET MSDS #53-100-112
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Gypsum Plaster Retarder for Lime Based Products
Gypsum Plaster Retarder for Lime Based Products 53100112v5Gypsum Plaster Retarder for Lime Based Products 53100112v5
SECTION 1
CHEMICAL PRODUCT AND IDENTIFICATION
United States Gypsum Company Product Safety: 1 (800) 507-8899
550 West Adams Street www.usg.com
Chicago, Illinois 60661-3637 Version Date: January 1, 2008
A Subsidiary of USG Corporation Version: 5
PRODUCT(S) Gypsum Plaster Retarder for Lime Based Products
CHEMICAL FAMILY /
Construction Plasters
GENERAL CATEGORY
Formulated product containing Plaster of Paris (Calcium Sulfate Hemihydrate)
SYNONYMS
(CaSO4鈥⒙紿2O)
SECTION 2
HAZARD IDENTIFICATION
EMERGENCY OVERVIEW:
螖WARNING!
This product is not expected to produce any unusual hazards during normal use. Exposure to high dust levels may
irritate the skin, eyes, nose, throat, or upper respiratory tract.
POTENTIAL HEALTH EFFECTS (See Section 11 for more information)
ACUTE :
Exposure to dust generated during the handling or use of the product may irritate eyes, skin, nose,
throat, and upper respiratory tract. Persons subjected to large amounts of this dust will be forced to
Inhalation leave area because of nuisance conditions such as coughing, sneezing and nasal irritation. Labored
breathing may occur after excessive inhalation. If respiratory symptoms persist, consult physician.
Dust can cause mechanical irritation of eyes. If burning, redness, itching, pain or other symptoms
Eyes
persist or develop, consult physician.
Skin None known.
Ingestion None known.
CHRONIC:
Prolonged and repeated exposure to airborne free respirable crystalline silica can result in lung disease
Inhalation (i.e., silicosis) and/or lung cancer. The development of silicosis may increase the risks of additional
health effects. The risk of developing silicosis is dependent upon the exposure intensity and duration.
Eyes None known.
Skin None known.
Ingestion None known.
TARGET ORGANS: Eyes, skin and respiratory system.
PRIMARY ROUTES OF ENTRY: Inhalation, eyes and skin contact.
CARCINOGENICITY CLASSIFICATION OF INGREDIENT(S) All substances listed are associated with the nature of
the raw materials used in the manufacture of this product and are not independent components of the product
MATERIAL SAFETY DATA SHEET MSDS #53-100-112
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Gypsum Plaster Retarder for Lime Based Products
formulation. All substances, if present, are at levels well below regulatory limits. See Section 11: Toxicology
Information for detailed information.
MATERIAL IARC NTP ACGIH CAL- 65
Crystalline silica 1 1 A2 Listed
IARC - International Agency for Research on Cancer: 1- Carcinogenic to humans; 2A 鈥? Probably carcinogenic to
humans; 2B 鈥? Possibly carcinogenic to humans; 3 - Not classifiable as a carcinogen; 4 鈥? Probably not a carcinogen
NTP 鈥? National Toxicology Program (Health and Human Services Dept., Public Health Service, NIH/NIEHS): 1-
Known to be carcinogen; 2- Anticipated to be carcinogens
ACGIH 鈥? American Conference of Governmental Industrial Hygienists: A1 鈥? Confirmed human carcinogen; A2 鈥?
Suspected human carcinogen; A3 鈥? Animal carcinogen; A4 - Not classifiable as a carcinogen; A5 鈥? Not suspected as
a human carcinogen
CAL-65 鈥? California Proposition 65 鈥淐hemicals known to the State of California to Cause Cancer鈥?
Respirable crystalline silica: IARC: Group 1 carcinogen, NTP: Known human carcinogen. The weight percent of
crystalline silica given represents total quartz and not the respirable fraction. The weight percent of respirable silica
has not been measured in this product.
POTENTIAL ENVIRONMENTAL EFFECTS: This product has no known adverse effect on ecology. (See Section 12
for more information.)
SECTION 3
COMPOSITION, INFORMATION ON INGREDIENTS
MATERIAL WT% CAS #
Plaster of Paris (CaSO4鈥⒙紿2O) >60 26499-65-0
Crystalline Silica <1 14808-60-7
Potassium Bitartrate >40 868-14-4
All ingredients of this product are included in the U.S. Environmental Protection Agency鈥檚 Toxic Substances Control
Act Chemical Substance Inventory and the Canadian Domestic Substances List (DSL).
The weight percent for silica represents total quartz and not the respirable fraction.
SECTION 4
FIRST AID MEASURES
FIRST AID PROCEDURES
Remove to fresh air. Leave the area of exposure and remain away until coughing and other symptoms
Inhalation
subside. Other measures are usually not necessary, however if conditions warrant, contact physician.
In case of contact, do not rub or scratch your eyes. To prevent mechanical irritation, flush thoroughly
Eyes
with water for 15 minutes. If irritation persists, consult physician.
To prevent the drying effect of plaster of paris, wash with mild soap and water. A commercially available
Skin hand lotion may be used to treat dry skin areas. If skin has become cracked, take appropriate action to
prevent infection and promote healing. If irritation persists, consult physician.
Plaster of paris hardens and, if ingested, may result in obstruction of the gut, especially the pyloric
Ingestion
region. Drinking gelatin solutions or large volumes of water may delay setting.
MEDICAL CONDITIONS WHICH MAY BE AGGRAVATED: Pre-existing upper respiratory and lung diseases such
MATERIAL SAFETY DATA SHEET MSDS #53-100-112
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Gypsum Plaster Retarder for Lime Based Products
as, but not limited to, bronchitis, emphysema and asthma. Pre-existing skin diseases such as, but not limited to,
rashes and dermatitis.
NOTES TO PHYSICIAN: Treatment should be directed at the control of symptoms and the clinical condition.
SECTION 5
FIRE FIGHTING MEASURES
General Fire Hazards Not expected to burn.
Extinguishing Media Water or use extinguishing media appropriate for surrounding fire.
Special Fire Fighting Procedures Wear appropriate personal protective equipment. See section 8.
Unusual Fire and Explosion
None known
Hazards
Above 1450潞 C - decomposes to calcium oxide (CaO) and sulfur dioxide
Hazardous Combustion Products
(SO2).
Flash Point Auto Ignition
Not Determined Not Applicable
Method Used Not Applicable Flammability
Not Applicable
Classification
Upper Flammable Limit (UFL) Not Determined
Lower Flammable Limit (LFL) Rate of Burning
Not Determined Not Applicable
SECTION 6
ACCIDENTAL RELEASE MEASURES
CONTAINMENT: No special precautions. Wear appropriate personal protective equipment. See section 8.
CLEAN-UP: Use normal clean up procedures. No special precautions.
DISPOSAL: Follow all local, state, provincial and federal regulations. Never discharge large releases directly into
sewers or surface waters.
SECTION 7
HANDLING AND STORAGE
HANDLING: Avoid dust contact with eyes. Wear the appropriate eye protection against dust (See Section 8).
Minimize dust generation and accumulation. Avoid breathing dust. Wear the appropriate respiratory protection
against dust in poorly ventilated areas and if TLV is exceeded (see Sections 2 and 8). Use good safety and industrial
hygiene practices.
STORAGE: Store in a cool, dry, ventilated area away from sources of heat, moisture and incompatibilities (see
Section 10). As a dry powder, dew point conditions or other conditions causing presence of liquid will harden plaster
of paris during storage.
MATERIAL SAFETY DATA SHEET MSDS #53-100-112
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SECTION 8
EXPOSURE CONTROLS/PERSONAL PROTECTION
TLV (mg/m3) PEL( mg/m3)
MATERIAL WT%
Plaster of Paris (CaSO4鈥⒙紿2O) >60 10 15(T)/5(R)
Crystalline Silica <1 0.025(R) 0.1(R)
Potassium Bitartrate >40 (NE) (NE)
(T)鈥揟otal; (R)鈥揜espirable; (NE)-Not Established; (C)-Ceiling; (STEL)-Short-term exposure limit
(F)-Fume; (Du)-Dust; (M)-Mist
ppm-part per million; f/cc-fiber per cubic centimeter; mppcf- million particles per cubic foot
ENGINEERING CONTROLS: Provide ventilation sufficient to control airborne dust levels. If user operations generate
airborne dust, use ventilation to keep dust concentrations below permissible exposure limits. Where general
ventilation is inadequate, use process enclosures, local exhaust ventilation, or other engineering controls to control
dust levels below permissible exposure limits.
RESPIRATORY PROTECTION: Wear a NIOSH/MSHA-approved respirator equipped with particulate cartridges when
dusty in poorly ventilated areas, and if TLV is exceeded. A respiratory program that meets OSHA's 29 CFR 1910.134
and ANSI Z88.2 requirements must be followed whenever workplace conditions warrant a respirator's use. If
engineering controls are not possible, wear a properly fitted NIOSH/MSHA-approved particulate respirator.
OTHER PERSONAL PROTECTIVE EQUIPMENT:
Eye/Face Wear eye protection, safety glasses or goggles, to avoid possible eye contact.
Skin Wear gloves and protective clothing to prevent repeated or prolonged skin contact.
Selection of Personal Protective Equipment will depend on environmental working conditions and
General
operations.
SECTION 9
PHYSICAL AND CHEMICAL PROPERTIES
Appearance Vapor Density (Air = 1)
White to off-white Not Applicable
Odor Specific Gravity (H2O = 1)
Low to no odor ~2.96 (Plaster of Paris)
0.15 - 0.40 (Plaster of
Odor Threshold Solubility in water (g/100g)
Not Determined
Paris)
Physical State Partition Coefficient
Solid/ Powder Not Determined
pH @ 25 潞 C Auto-ignition Temp
~7 Not Determined
Melting Point Decomposition Temp
Not Applicable 2642潞F/1450潞C
Freezing Point Viscosity
Not Applicable Not Applicable
Boiling Point Particle Size
Not Applicable Varies
55-70 lb/ft3 (dry) / 881-
Flash Point Bulk Density
Not Determined
1,121 kg/m3 (dry)
~ 145 g/mole (Plaster of
Evaporation Rate (BuAc = 1) Molecular Weight
Not Applicable
Paris)
MATERIAL SAFETY DATA SHEET MSDS #53-100-112
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Upper Flammable Limit (UFL) VOC Content
Not Determined Zero
Lower Flammable Limit (LFL) Percent Volatile
Not Determined Zero
Vapor Pressure (mm Hg) Not Applicable
SECTION 10
CHEMICAL STABILITY AND REACTIVITY
STABILITY Stable.
CONDITIONS TO AVOID Contact with incompatibles (see below).
Acids. Exposure to water and acids must be supervised because the
INCOMPATIBILITY
reactions are vigorous and produce large amounts of heat.
HAZARDOUS POLYMERIZATION None known.
HAZARDOUS DECOMPOSITION Above 1450潞 C - calcium oxide (CaO) and sulfur dioxide (SO2).
SECTION 11
TOXICOLOGICAL INFORMATION
ACUTE EFFECTS: The sulfate ion has caused gastro-intestinal disturbance in humans following large oral doses.
Limited studies involving the repeated inhalation of an (unspecified) calcium sulfate failed to identify any particular
target organs in monkeys, rats and hamsters. No evidence of mutagenicity was found in Ames bacterial tests.
Plaster of paris: Oral LD50 rat > 5000 mg/kg; Dermal LD50 鈥? None Determined; Skin Irritation LD50 鈥? None
Determined; Eye Irritation LD50鈥? None Determined
CHRONIC EFFECTS / CARCINOGENICITY:
Crystalline Silica: Exposures to respirable crystalline silica are not expected during the normal use of this product;
however, actual levels must be determined by workplace hygiene testing. The weight percent of respirable crystalline
silica may not have been measured in this product. Prolonged and repeated exposure to airborne free respirable
crystalline silica can result in lung disease (i.e., silicosis) and/or lung cancer. The development of silicosis may
increase the risks of additional health effects. The risk of developing silicosis is dependent upon the exposure
intensity and duration.
In June, 1997, IARC classified crystalline silica (quartz and cristobalite) as a human carcinogen. In making the overall
evaluation, the IARC Working Group noted that carcinogenicity in humans was not detected in all industrial
circumstances studied. Carcinogenicity may be dependent on inherent characteristics of the crystalline silica or on
external factors affecting its biological activity or distribution of its polymorphs.
IARC states that crystalline silica inhaled in the form of quartz or cristobalite from occupational sources is carcinogenic
to humans (Group 1).
SECTION 12
ECOLOGICAL INFORMATION
ENVIRONMENTAL TOXICITY: This product has no known adverse effect on ecology.
Ecotoxicity value Not determined.
MATERIAL SAFETY DATA SHEET MSDS #53-100-112
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SECTION 13
DISPOSAL CONSIDERATIONS
WASTE DISPOSAL METHOD: Dispose of material in accordance with federal, state, and local regulations. Never
discharge directly into sewers or surface waters. Consult with environmental regulatory agencies for guidance on
acceptable disposal practices. Slurry may plug drains. Trace amounts of residue can be flushed to a drain, using
plenty of water.
SECTION 14
TRANSPORT INFORMATION
U.S. DOT INFORMATION: Not a hazardous material per DOT shipping requirements. Not classified or regulated.
Shipping Name Same as product name.
Hazard Class Not classified.
UN/NA # None. Not classified.
Packing Group None.
Label (s) Required Not applicable.
GGVSec/MDG-Code Not classified.
ICAO/IATA-DGR Not applicable.
RID/ADR None.
ADNR None.
SECTION 15
REGULATORY INFORMATION
UNITED STATES REGULATIONS
All ingredients of this product are included in the U.S. Environmental Protection Agency鈥檚 Toxic Substances Control
Act Chemical Substance Inventory.
CERCLA
Sec. 112
3 3 3
RCRA
MATERIAL WT% 0 0 1
Code
CAA
2 4 3
Plaster of Paris (CaSO4鈥⒙紿2O) >60 NL NL NL NL NL NL
Crystalline Silica <1 NL NL NL NL NL NL
Potassium Bitartrate >40 NL NL NL NL NL NL
Key : NL = Not Listed
SARA Title III Section 302 (EPCRA) Extremely Hazardous Substances: Threshold Planning Quantity (TPQ)
SARA Title III Section 304 (EPCRA) Extremely Hazardous Substances: Reportable Quantity (RQ)
SARA Title III Section 313 (EPCRA) Toxic Chemicals: X= Subject to reporting under section 313
MATERIAL SAFETY DATA SHEET MSDS #53-100-112
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CERCLA Hazardous Substances: Reportable Quantity (RQ)
CAA Section 112 (r) Regulated Chemicals for Accidental Release Prevention: Threshold Quantities(TQ)
RCRA Hazardous Waste: RCRA hazardous waste code
CANADIAN REGULATIONS
This product has been classified in accordance with the hazard criteria of Controlled Product regulations and the
MSDS contains all the information required by the Controlled Products Regulations. All ingredients of this product are
included in the Canadian Domestic Substances List (DSL).
WHMIS
MATERIAL WT% IDL Item #
Classification
Plaster of Paris (CaSO4鈥⒙紿2O) >60 Not Listed Not Listed
Crystalline Silica <1 1406 D2A
Potassium Bitartrate >40 Not Listed Not Listed
IDL Item#: Canadian Hazardous Products Act 鈥? Ingredient Disclosure List Item #
WHMIS Classification: Workplace Hazardous Material Information System
Risk and Safety Phrases defined by European Union Directive 67/548/EEC (Annex III and IV)
R-Phrase(s): R36/37/38
S-Phrase(s): S51 S38 S39 S2
SECTION 16
OTHER INFORMATION
Label Information
螖 WARNING!
When mixed with water, this material hardens and becomes very hot 鈥? sometimes quickly. DO NOT attempt to make
a cast enclosing any part of the body using this material. Failure to follow these instructions can cause severe burns
that may require surgical removal of affected tissue or amputation of limb.
Dust may cause irritation to eyes, skin, nose, throat and upper respiratory tract. Avoid irritation by reducing exposure
to dust. Use in a well-ventilated area or provide sufficient local ventilation. If dusty, wear a NIOSH/MSHA-approved
dust respirator. Wear eye protection. If eye contact occurs, flush thoroughly with water for 15 minutes. If irritation
persists, call physician. Wash with soap and water after use. Do not ingest. If ingested, call physician. Product
safety information: (800) 507-8899 or www.cgcinc.com.
KEEP OUT OF REACH OF CHILDREN.
INFORMATION FOR HANDLING AND IDENTIFICATION OF CHEMICAL HAZARDS
0 = Minimal Hazard
*
HEALTH 1
0
NFPA Ratings: HIMS Ratings: 1 = Slight Hazard
0
FLAMMABILITY
1 0
Health: 1 Health: 1 2 = Moderate Hazard
1
PHYSICAL HAZARD
Fire: 0 Fire: 0 3 = Serious Hazard
E
PERSONAL PROTECTION
Reactivity: 0 Reactivity: 1 4 = Severe Hazard
E 鈥? Safety glasses, gloves and dust respirator
Key/Legend
MATERIAL SAFETY DATA SHEET MSDS #53-100-112
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TLV Threshold Limit Value
PEL Permissible Exposure Limit
CAS Chemical Abstracts Service (Registry Number)
NIOSH National Institute for Occupational Safety and Health
MSHA Mine Safety and Health Administration
OSHA Occupational Health and Safety Administration
ACGIH American Conference of Governmental Industrial Hygienists
IARC International Agency for Research on Cancer
DOT United States Department of Transportation
EPA United States Environmental Protection Agency
NFPA National Fire Protection Association
HMIS Hazardous Materials Identification System
PPE Personal Protection Equipment
TSCA Toxic Substances Control Act
DSL Canadian Domestic Substances List
NDSL Canadian Non-Domestic Substances List
SARA Superfund Amendments and Reauthorization Act of 1986
CAA Clean Air Act
Emergency Planning & Community Right-to-know Act
EPCRA
RCRA Resource Conservation and Recovery Act
CERCLA Comprehensive Environmental Response, Compensation and Liability Act of 1980
UN/NA# United Nations/North America number
CFR Code of Federal Regulations
WHMIS Workplace Hazardous Material Information System
Prepared by:
Product Safety
USG Corporation
550 West Adams Street
Chicago, IL 60661-3637
The information contained in this document applies to this specific material as supplied. It may not be valid for this
material if it is used in combination with any other materials. It is the user鈥檚 responsibility to satisfy oneself as to the
suitability and completeness of this information for his/her own particular use.
END
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