Product ID:DEX-O-TEX N-99 UNDERLAY POWDER
MSDS Date:10/01/1985
FSC:5610
NIIN:00-925-1722
MSDS Number: CCQTF

Emergency Phone: 213-636-0561

Info Phone: 213-636-0561

Cage: 60782

Telephone: 310-886-9100

Cage: 60782

SILICA, CRYSTALLINE - QUARTZ; (CRYSTALLINE QUARTZ)

CAS: 14808-60-7

RTECS: VV7330000

OSHA PEL SEE TABLE Z-3

ACGIH TLV: 0.1 MG/M3 RDUST

LD50 LC50 Mixture:NONE SPECIFIED BY MANUFACTURER.
Routes of Entry: Inhalation:YES Skin:YES Ingestion:YES
Reports of Carcinogenicity:NTP:YES IARC:YES OSHA:NO
Health Hazards Acute and Chronic:ACUTE:EYE IRRITATION - POSSIBLE SKIN
IRRITATION. CHRONIC:FREE SILICA DUST MAY CAUSE DELAYED LUNG INJURY.
Explanation of Carcinogenicity:SILICA, CRYSTALLINE-QUARTZ:IARC
MONOGRAPHS, SUPP. VOL 7, PG 341, 1987:GROUP 2A. NTP 7TH ANNUAL RPT
ON CARCINS, (SUPDAT)
Effects of Overexposure:SEE HEALTH HAZARDS.
Medical Cond Aggravated by Exposure:NOT KNOWN.

First Aid:INHALATION:MOVE SUBJECT TO FRESH AIR IF NEEDED. EYES:FLUSH
WITH WATER FOR AT LEAST 15 MINUTES. SKIN:WASH WITH SOAP AND WATER.
INGESTION:CALL PHYSICIAN.

Extinguishing Media:NO FIRE HAZARD. MEDIA SUITABLE FOR SURROUNDING FIRE
.
Fire Fighting Procedures:NOT APPLICABLE. USE NIOSH APPROVED SCBA & FULL
PROTECTIVE EQUIPMENT .
Unusual Fire/Explosion Hazard:NOT APPLICABLE.

Spill Release Procedures:SWEEP OR VACUUM USING GOOD VENTILATION SO TLV
IS NOT EXCEEDED.
Neutralizing Agent:NONE SPECIFIED BY MANUFACTURER.

Handling and Storage Precautions:USE DUSTLESS SYSTEMS FOR HANDLING,
STORAGE, AND CLEAN UP SO TLV OF SIO*2 IS NOT EXCEEDED - STORE IN
DRY AREA.
Other Precautions:PRACTICE GOOD HOUSEKEEPING AND POST WORK AREAS WHERE
PRODUCT IS USED.

Respiratory Protection:NIOSH APPROVED RESPIRATOR.
Ventilation:GOOD. LOCAL & MECHANICAL (GENERAL):YES. SPECIAL:FOLLOW OSHA
STANDARD.
Protective Gloves:IMPERVIOUS GLOVES .
Eye Protection:ANSI APPRVD CHEM WORKERS GOGGLES .
Other Protective Equipment:ANSI APPRVD EYE WASH & DELUGE SHOWER .
Work Hygienic Practices:NONE SPECIFIED BY MANUFACTURER.
Supplemental Safety and Health
EXPLAN OF CARCIN:1994:ANTICIPATED TO BE CARCINOGEN.

Spec Gravity:2.65 (H*2O=1)
Solubility in Water:NEGLIGIBLE
Appearance and Odor:GRANULAR POWDER ESSENTIALLY ODORLESS.

Stability Indicator/Materials to Avoid:YES
DISSOLVED BY HYDROFLUORIC ACID WHICH CAN RESULT IN SILICON
TETRAFLUORIDE (SIF*4) WHICH IS CORROSIVE GAS.
Stability Condition to Avoid:MATERIAL WILL HARDEN IF IN CONTACT WITH
WATER.
Hazardous Decomposition Products:NOT APPLICABLE.

Waste Disposal Methods:DISPOSE IN SANITARY LANDFILL IN ACCORDANCE WITH
STATE, LOCAL AND FEDERAL REGULATIONS ON SOLID WASTES.

Disclaimer (provided with this information by the compiling agencies):
This information is formulated for use by elements of the Department
of Defense. The United States of America in no manner whatsoever,
expressly or implied, warrants this information to be accurate and
disclaims all liability for its use. Any person utilizing this
document should seek competent professional advice to verify and
assume responsibility for the suitability of this information to their
particular situation.