MSDS

M A T E R I A L S A F E T Y D A T A S H E E T
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HE208R - HENRY 208R RUBBERIZED WET PATCH
ROOF LEAK REPAIR
8. Exposure Controls/Personal Protection
Engineering Controls
Use with adequate general and local exhaust ventilation. When used outdoors, stay well away from building air intakes
or close and seal the intakes to prevent product from entering building.
Eye/Face Protection
Safety glasses with side shields or goggles recommended.
Skin Protection
Use with chemical-protective gloves to prevent skin contact.
Respiratory Protection
The level of respiratory protection needed should be based on the evaluation of chemical exposures by a health or
safety professional. If required, use a NIOSH-approved air purifying respirator with organic vapor cartridge and
particulate filter or supplied air respirator.
Occupational Exposure Limits for individual ingredients (if available) are listed below.
Ingredient(s) - Exposure Limits
1,2,4-trimethylbenzene
ACGIH TLV-TWA 25 ppm
aromatic petroleum distillates
OSHA PEL-TWA 500 ppm
petroleum asphalt
ACGIH TLV-TWA 0.5 mg/m3 (inhalable fraction, as benzene-soluble aerosol)
calcium carbonate
OSHA PEL-TWA 15 mg/m3 (total dust)
OSHA PEL-TWA 5 mg/m3 (respirable dust)
cellulose fiber
ACGIH TLV-TWA 10 mg/m3
silica, quartz
ACGIH TLV-TWA 0.025 mg/m3
OSHA PEL-TWA 30mg/m3 / (%SiO2+2) (total dust)
OSHA PEL-TWA 10 mg/m3/ (%SiO2+2) (respirable dust)
stoddard solvent
ACGIH TLV-TWA 100 ppm
OSHA PEL-TWA 500 ppm
9. Physical And Chemical Properties
Appearance
Black Paste
Odor
Strong Petroleum Solvent Odor
Chemical Type: Mixture
Physical State: Solid
Boiling Point: 310-400 °F
Specific Gravity: 1.14
Percent Volatiles: 22
Vapor Pressure: 2@68ºF
Vapor Density: >1
pH Factor: not applicable
Solubility: insoluble in water
Evaporation Rate: <1