MSDS

MATERIAL SAFETY DATA SHEET
SHEETROCK® Setting-Type Joint Compounds
DURABOND® 90
MSDS #61-205-012
Page 6 of 9
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.
CHRONIC EFFECTS / CARCINOGENICITY:
Plaster of Paris: Testing of dust from USG plaster of paris has not detected respirable crystalline silica.
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. Smoking in combination with silica exposures increases the risk of
cancer. 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).
Mica: Prolonged and repeated breathing of respirable mica dust may cause lung disease (pneumoconiosis). The
extent and severity of lung injury correlates with the length of exposure and dust concentration.
SECTION 12
ECOLOGICAL INFORMATION
ENVIRONMENTAL TOXICITY: This product has no known adverse effect on ecology. Toxicity studies performed
with fish, aquatic invertebrates and aquatic plants showed no toxic effect.
Ecotoxicity value
Not determined.
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.