Diatomaceous earth; Infusorial earth; Silicon dioxide; Amorphous silica; Non-crystalline form of SiO2.
**** SECTION 2 - COMPOSITION, INFORMATION ON INGREDIENTS ****
+----------------+--------------------------------------+----------+-----------+
| CAS# | Chemical Name | % | EINECS# |
|----------------|--------------------------------------|----------|-----------|
|----------------|--------------------------------------|----------|-----------|
| 7631-86-9 |Silica, amorphous | 100 | 231-545-4 |
|----------------|--------------------------------------|----------|-----------|
+----------------+--------------------------------------+----------+-----------+
Text for R-phrases: see Section 16
Hazard Symbols: None Listed.
Risk Phrases: None Listed.
**** SECTION 3 - HAZARDS IDENTIFICATION ****
EMERGENCY OVERVIEW
Hygroscopic (absorbs moisture from the air).
Potential Health Effects
Eye:
Dust may cause mechanical irritation.
Skin:
Low hazard for usual industrial handling.
Ingestion:
No hazard expected in normal industrial use.
Inhalation:
May cause respiratory tract irritation.
Chronic:
Chronic inhalation of dust may lead to silicosis. Chronic inhalation
can cause pneumoconiosis.
**** SECTION 4 - FIRST AID MEASURES ****
Eyes:
Immediately flush eyes with plenty of water for at least 15 minutes,
occasionally lifting the upper and lower eyelids. If irritation
develops, get medical aid.
Skin:
Flush skin with plenty of water for at least 15 minutes while
removing contaminated clothing and shoes. Get medical aid if
irritation develops or persists. Wash clothing before reuse.
Ingestion:
If swallowed, do not induce vomiting unless directed to do so by
medical personnel. Never give anything by mouth to an unconscious
person. Get medical aid.
Inhalation:
If inhaled, remove to fresh air. If not breathing, give artificial
respiration. If breathing is difficult, give oxygen. Get medical aid.
Notes to Physician:
Treat symptomatically and supportively.
**** SECTION 5 - FIRE FIGHTING MEASURES ****
General Information:
As in any fire, wear a self-contained breathing apparatus in
pressure-demand, MSHA/NIOSH (approved or equivalent), and full
protective gear. Substance is noncombustible.
Extinguishing Media:
Use extinguishing media most appropriate for the surrounding fire.
**** SECTION 6 - ACCIDENTAL RELEASE MEASURES ****
General Information: Use proper personal protective equipment as indicated
in Section 8.
Spills/Leaks:
Vacuum or sweep up material and place into a suitable disposal
container. Clean up spills immediately, observing precautions in the
Protective Equipment section. Avoid generating dusty conditions.
Provide ventilation. Material is a regenerative adsorbent capable of
taking up and holding about 4X its weight of water. If spilled, it
will adsorb water vapor from the air and any moisture from
surroundings.
**** SECTION 7 - HANDLING and STORAGE ****
Handling:
Wash thoroughly after handling. Remove contaminated clothing and
wash before reuse. Use with adequate ventilation. Minimize dust
generation and accumulation. Avoid contact with eyes, skin, and
clothing. Avoid breathing dust.
Storage:
Store in a cool, dry place. Keep container closed when not in use.
Store protected from moisture.
**** SECTION 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION ****
Engineering Controls:
Use adequate general or local exhaust ventilation to keep airborne
concentrations below the permissible exposure limits.
Exposure Limits
CAS# 7631-86-9:
United Kingdom, WEL - TWA: 6 mg/m3 TWA (inhalable dust); 2.4 mg/m
TWA (respirable dust)
United Kingdom, WEL - STEL: 18 mg/m3 STEL (inhalable dust); 7.2 m
STEL (respirable dust)
Germany: 4 mg/m3 TWA (inhalable fraction)
Russia: 1 mg/m3 TWA
CAS# 112926-00-8:
Eyes:
Wear appropriate protective eyeglasses or chemical
safety goggles as described by OSHA's eye and face
protection regulations in 29 CFR 1910.133 or European
Standard EN166.
Skin:
Glove protection is not normally required.
Clothing:
Protective garments not normally required.
Respirators:
A respiratory protection program that meets OSHA's 29
CFR 1910.134 and ANSI Z88.2 requirements or European
Standard EN 149 must be followed whenever workplace
conditions warrant respirator use.
**** SECTION 9 - PHYSICAL AND CHEMICAL PROPERTIES ****
Physical State: Powder
Color: white to gray white
Odor: odorless
pH: Not available.
Vapor Pressure: 0 mm Hg @ 25 deg C
Viscosity: Not available.
Boiling Point: 2230 deg C
Freezing/Melting Point: 1710 deg C
Autoignition Temperature: Not applicable.
Flash Point: Not applicable.
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature:
Solubility in water: Insoluble.
Specific Gravity/Density: 2.20g/cm
Molecular Formula: SiO2
Molecular Weight: 60.08
**** SECTION 10 - STABILITY AND REACTIVITY ****
Chemical Stability:
Stable under normal temperatures and pressures.
Conditions to Avoid:
Dust generation, moisture.
Incompatibilities with Other Materials:
Fluorine, oxygen difluoride, chlorine trifluoride, hydrogen fluoride.
Hazardous Decomposition Products:
Oxides of silicon.
Hazardous Polymerization: Has not been reported.
**** SECTION 11 - TOXICOLOGICAL INFORMATION ****
RTECS#:
CAS# 7631-86-9: EU8655000 VV7565000
CAS# 112926-00-8: VV7315000
LD50/LC50:
CAS# 7631-86-9: Draize test, rabbit, eye: 25 mg/24H Mild.
CAS# 112926-00-8.
Carcinogenicity:
Silica, amorphous -
Not listed by ACGIH, IARC, or NTP.
Silica gel, pptd., cryst.-free, hydrated form -
Not listed by ACGIH, IARC, or NTP.
Other:
See actual entry in RTECS for complete information.
**** SECTION 12 - ECOLOGICAL INFORMATION ****
Other
No information available.
**** SECTION 13 - DISPOSAL CONSIDERATIONS ****
Dispose of in a manner consistent with federal, state, and local regulations.
**** SECTION 14 - TRANSPORT INFORMATION ****
IATA
Shipping Name: Not regulated.
Hazard Class:
UN Number:
Packing Group:
IMO
Shipping Name: Not regulated.
Hazard Class:
UN Number:
Packing Group:
RID/ADR
Shipping Name: Not regulated.
Hazard Class:
UN Number:
Packing group:
**** SECTION 15 - REGULATORY INFORMATION ****
European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: Not available.
Risk Phrases:
Safety Phrases:
S 24/25 Avoid contact with skin and eyes.
WGK (Water Danger/Protection)
CAS# 7631-86-9: 0
CAS# 112926-00-8: 0
Canada
CAS# 7631-86-9 is listed on Canada's DSL List.
CAS# 112926-00-8 is listed on Canada's DSL List.
CAS# 7631-86-9 is listed on Canada's Ingredient Disclosure List.
CAS# 112926-00-8 is not listed on Canada's Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 7631-86-9 is listed on the TSCA inventory.
CAS# 112926-00-8 is not on the TSCA Inventory because it is a hydrate.
It is considered to be listed if the CAS number for the anhydrous form
is on the inventory (40CFR720.3(u)(2)).
**** SECTION 16 - ADDITIONAL INFORMATION ****
Text for R-phrases from Section 2
MSDS Creation Date: 1/05/1998 Revision #4 Date: 11/10/2004
The information above is believed to be accurate and represents the best
information currently available to us. However, we make no warranty of
merchantability or any other warranty, express or implied, with respect to
such information, and we assume no liability resulting from its use. Users
should make their own investigations to determine the suitability of the
information for their particular purposes. In no way shall the company be
liable for any claims, losses, or damages of any third party or for lost
profits or any special, indirect, incidental, consequential or exemplary
damages, howsoever arising, even if the company has been advised of
the possibility of such damages.
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