MSDS

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SECTION 8: EXPOSURE CONTROLS/PERSONAL PROTECTION
Recommended Exposure Limits:
Naphthalene: ACGIH TLV: 10 ppm (52 mg/m
3
) 8-hr TWA*
STEL: 15 ppm (79 mg/m
3
)
*Skin- danger of Cutaneous absorption.
OSHA PEL: 10 ppm (50 mg/m
3
) 8-hr TWA
General Hygienic Practices:
Do not get on eyes, skin, or clothing.
Do not breathe dust, vapors or fumes.
Wash thoroughly after handling.
Eyewear: Chemical goggles.
Skin: Gloves are recommended if there is a potential for skin contact. A plastic or rubber glove
which provides a physical barrier to the powder is required. Use disposable spun polyolefin (e.g.
Tyvek) coveralls or equivalent to protect against contact. Consult the glove and clothing
manufacturers, suppliers and/or industrial hygienist for further information.
Respiratory Protection: Respiratory protection is required whenever air contamination (dust,
mist, or vapors) is generated by the process. A NIOSH approved high efficiency toxic
dust/mist/fume respirator is recommended.
Work Practices and Engineering Controls:
General room ventilation is adequate unless the process generates dust or fumes.
Remove all sources of ignition (flame or sparks).
Prevent the accumulation of dust in the work area by thorough periodic cleaning of the area.
Protective Measures During Repair and Maintenance: No special measures are required.
Follow the recommendation for personal protective equipment.
SECTION 9: PHYSICAL AND CHEMICAL PROPERTIES
The following information pertains to boric acid.
Appearance: White balls or flakes.
Odor: Characteristic. Odor Threshold: >0.3 ppm
Taste: Not determined.
pH: Not applicable.
Volatile (Wt. or Vol.), %: Not determined.
Moisture Content, (Wt.) %: Not determined.
Solubility in Water: 31 mg/L at 25
0
C.
Solubility - other solvents: Methanol, ethanol, ether, benzene, toluene.
. Specific Gravity/Bulk Density: Variable with product.
Vapor Pressure: 0.085 mm Hg at 25
0
C.
Vapor Density (air = 1): 4.42.