Specification

Durham’s Rock Hard Putty
05/16/2015
7. HANDLING AND STORAGE
Precautions for Safe Handling: Do not breathe dust. Avoid dust generation. Avoid contact with eyes. Wear
protective clothing and equipment.
Use only with adequate ventilation. Wash thoroughly after handling. Keep
container closed.
Silica dust may be in the air without a visible dust cloud. Practice good housekeeping to
prevent accumulation of dust in work areas.
Conditions for Safe Storage, Including Any Incompatibilities: Store in a cool, dry, well-ventilated area away
from incompatible materials. Keep containers closed when not in use.
8. EXPOSURE CONTROLS/PERSONAL PROTECTION
Exposure Guidelines:
Plaster of Paris
15 mg/m3 TWA OSHA PEL (total dust)
5 mg/m3 TWA OSHA PEL (respirable fraction)
Dextrin
None Established
Talc
2 mg/m3 TWA ACGIH TLV (Respirable)
20 mppcf OSHA PEL
Crystalline Silica- Quartz
0.025 mg/m3 TWA ACGIH TLV (Respirable)
10 mg/m
3
TWA OSHA PEL (Respirable fraction)
% SiO
2
+ 2
30 mg/m
3
TWA OSHA PEL (Total dust)
% SiO
2
+ 2
Yellow Iron Oxide
None Established
Engineering Controls: Use with adequate local exhaust ventilation to maintain exposures below the
occupational exposure limits.
Respiratory Protection: In operations where the occupational exposure limits are exceeded, an approved
respirator with dust/mist cartridges or supplied air respirator should be used. Respirator selection and use
should be based on contaminant type, form and concentration. Follow applicable regulations and good
Industrial Hygiene practice.
Skin Protection: None required under normal conditions of use.
Eye Protection: Follow facility requirements. Chemical safety glasses or dust goggles recommended to avoid
eye contact.
Other: None required under normal conditions of use.
9. PHYSICAL AND CHEMICAL PROPERTIES
Appearance and Odor: Cream colored, odorless powder.
Physical State: Solid
Odor Threshold: Not available
Vapor Density: Not applicable
Initial Boiling Point/Range: Not applicable
Solubility In Water: Insoluble
Vapor Pressure: Not applicable
Relative Density: Not available
Evaporation Rate: Not applicable
Melting/Freezing Point: Not available
pH: Not applicable
VOC Content: No VOC’s.
Octanol/Water Coefficient: Not applicable
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