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MSDS  
:
 Silicon, Powder, -325 Mesh, 99+%
CAS  
:
 7440-21-3
SYNONYMS  
:
 None.

Section 1 - Chemical Product and Company Identification
MSDS Name: Silicon, Powder, -325 Mesh, 99+%
Catalog Numbers: AC201560000, AC201560100, AC201560250, AC201561000, AC201562500
Synonyms:
None.
Company Identification:

              Acros Organics N.V.
              One Reagent Lane
              Fair Lawn, NJ 07410
For information in North America, call: 800-ACROS-01
For emergencies in the US, call CHEMTREC: 800-424-9300

Section 2 - Composition, Information on Ingredients

CAS# Chemical Name Percent EINECS/ELINCS
7440-21-3 Silicon >99 231-130-8

Section 3 - Hazards Identification

EMERGENCY OVERVIEW

Appearance: white crystalline powder crystalline powder.
Warning! Flammable solid. May cause eye and skin irritation. May cause respiratory and digestive tract irritation. May cause central nervous system depression. Moisture sensitive. Chronic inhalation of crystalline silica may lead to fibrotic lung disease, silicosis or cancer.
Target Organs: Central nervous system, lungs.


Potential Health Effects
Eye: May cause chemical conjunctivitis and corneal damage.
Skin: May cause irritation and dermatitis. May cause cyanosis of the extremities.
Ingestion: May cause gastrointestinal irritation with nausea, vomiting and diarrhea. Ingestion of large amounts may cause CNS depression.
Inhalation: Aspiration may lead to pulmonary edema. Contains crystalline silica which may lead to respiratory abnormalities and silicosis. Inhalation of dusts cause severe irritation of the upper respiratory tract, gastrointestinal disturbances, albuminuria, gradual loss of weight, and increasing weakness. May cause burning sensation in the chest.
Chronic: Chronic inhalation of dust may lead to silicosis. May cause silicosis-disabling pulmonary fibrosis characterized by fibrotic changes and miliary nodules in the lungs, dry cough, shortness of breath, emphysema, decreased chest expansion and increased susceptibility to tuberculosis.

Section 4 - First Aid Measures


Eyes: Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.
Skin: Get medical aid. Flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.
Ingestion: Never give anything by mouth to an unconscious person. Get medical aid. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.
Inhalation: Remove from exposure and move to fresh air immediately. 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. Dusts at sufficient concentrations can form explosive mixtures with air. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Use water spray to keep fire-exposed containers cool. Containers may explode in the heat of a fire. May be ignited by friction, heat, sparks, or flame. May react violently or explosively on contact with water. May re-ignite after fire is extinguished.
Extinguishing Media: Use water spray to cool fire-exposed containers. Use dry sand, Met-L-X powder, or G-1 graphite powder. Do NOT get water inside containers. DO NOT USE WATER, CO2, OR FOAM DIRECTLY ON FIRE ITSELF. Use dry sand, graphite powder, dry sodium chloride-based extinguishers.
Flash Point: Not applicable.
Autoignition Temperature: > 150 deg C (> 302.00 deg F)
Explosion Limits, Lower:Not available.
Upper: Not available.
NFPA Rating: (estimated) Health: 1; Flammability: 3; Instability: 0

Section 6 - Accidental Release Measures


General Information: Use proper personal protective equipment as indicated in Section 8.
Spills/Leaks: Very fine particles can cause a fire or explosion. Eliminate all ignition sources. Clean up spills immediately, observing precautions in the Protective Equipment section. Sweep up, then place into a suitable container for disposal. Avoid generating dusty conditions. Use a spark-proof tool. Provide ventilation. Do not get water inside containers.

Section 7 - Handling and Storage


Handling: Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Ground and bond containers when transferring material. Use spark-proof tools and explosion proof equipment. Avoid contact with eyes, skin, and clothing. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Keep container tightly closed. Keep away from heat, sparks and flame. Avoid ingestion and inhalation. Do not allow contact with water. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames. Keep from contact with moist air and steam.
Storage: Keep away from heat, sparks, and flame. Keep away from sources of ignition. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Flammables-area. Store protected from moisture.

Section 8 - Exposure Controls, Personal Protection


Engineering Controls: Facilities storing or utilizing this material should be equipped with an eyewash facility and a safety shower. Use adequate general or local explosion-proof ventilation to keep airborne levels to acceptable levels.
Exposure Limits
Chemical Name ACGIH NIOSH OSHA - Final PELs
Silicon 10 mg/m3 TWA 10 mg/m3 TWA (total dust); 5 mg/m3 TWA (respirable dust)3000 mg/m3 IDLH (listed under Silica, amorphous). 15 mg/m3 TWA (total dust); 5 mg/m3 TWA (respirable fraction)

OSHA Vacated PELs: Silicon: 10 mg/m3 TWA (total dust); 5 mg/m3 TWA (respirable fraction)
Personal Protective Equipment
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: Wear appropriate protective gloves to prevent skin exposure.
Clothing: Wear appropriate protective clothing to prevent skin exposure.
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: Crystalline powder
Appearance: white crystalline powder
Odor: None reported.
pH: Not available.
Vapor Pressure: Not available.
Vapor Density: Not available.
Evaporation Rate:Not available.
Viscosity: Not available.
Boiling Point: 2355 deg C @ 760.00mm Hg
Freezing/Melting Point:1410 deg C
Decomposition Temperature:Not available.
Solubility: insoluble in nitric acid and hydrochlori
Specific Gravity/Density:2.3300g/cm3
Molecular Formula:Si
Molecular Weight:28.09

Section 10 - Stability and Reactivity


Chemical Stability: Stable under normal temperatures and pressures.
Conditions to Avoid: Incompatible materials, ignition sources, dust generation, moisture, excess heat, strong oxidants.
Incompatibilities with Other Materials: Moisture, strong oxidizing agents.
Hazardous Decomposition Products: Irritating and toxic fumes and gases, oxides of silicon.
Hazardous Polymerization: Has not been reported.

Section 11 - Toxicological Information


RTECS#:      
CAS# 7440-21-3: VW0400000
LD50/LC50:
CAS# 7440-21-3:
     Draize test, rabbit, eye: 3 mg Mild;
     Oral, rat: LD50 = 3160 mg/kg;
.

Carcinogenicity:
CAS# 7440-21-3: Not listed by ACGIH, IARC, NTP, or CA Prop 65.

Epidemiology: IARC has concluded there is inadequate evidence to describe amorphous silica as carcinogenic in animals or in humans. Crystalline silica has been designated as a probable human carcinogen.
Teratogenicity: No information found
Reproductive Effects: No information found
Mutagenicity: No information found
Neurotoxicity: No information found
Other Studies:

Section 12 - Ecological Information

No information available.

Section 13 - Disposal Considerations

Chemical waste generators must determine whether a discarded chemical is classified as a hazardous waste. US EPA guidelines for the classification determination are listed in 40 CFR Parts 261.3. Additionally, waste generators must consult state and local hazardous waste regulations to ensure complete and accurate classification.
RCRA P-Series: None listed.
RCRA U-Series: None listed.

Section 14 - Transport Information

US DOT Canada TDG
Shipping Name: SILICON POWDER, AMORPHOUS SILICON POWDER AMORPHOUS
Hazard Class: 4.1 4.1
UN Number: UN1346 UN1346
Packing Group: III III

Section 15 - Regulatory Information

US FEDERAL

TSCA
     CAS# 7440-21-3 is listed on the TSCA inventory.
Health & Safety Reporting List
     None of the chemicals are on the Health & Safety Reporting List.
Chemical Test Rules
     None of the chemicals in this product are under a Chemical Test Rule.
Section 12b
     None of the chemicals are listed under TSCA Section 12b.
TSCA Significant New Use Rule
     None of the chemicals in this material have a SNUR under TSCA.
CERCLA Hazardous Substances and corresponding RQs
     None of the chemicals in this material have an RQ.
SARA Section 302 Extremely Hazardous Substances
     None of the chemicals in this product have a TPQ.
Section 313      No chemicals are reportable under Section 313.
Clean Air Act:
     This material does not contain any hazardous air pollutants.
     This material does not contain any Class 1 Ozone depletors.
     This material does not contain any Class 2 Ozone depletors.
Clean Water Act:
     None of the chemicals in this product are listed as Hazardous Substances under the CWA.
     None of the chemicals in this product are listed as Priority Pollutants under the CWA.
     None of the chemicals in this product are listed as Toxic Pollutants under the CWA.
OSHA:
     None of the chemicals in this product are considered highly hazardous by OSHA.
STATE
     CAS# 7440-21-3 can be found on the following state right to know lists: California, (listed as Silica, amorphous), New Jersey, Pennsylvania, Minnesota, Massachusetts.

California Prop 65

California No Significant Risk Level: None of the chemicals in this product are listed.

European/International Regulations

European Labeling in Accordance with EC Directives
Hazard Symbols:
     F
Risk Phrases:

     R 11 Highly flammable.

Safety Phrases:

     S 16 Keep away from sources of ignition - No smoking.
     S 33 Take precautionary measures against static discharges.
     S 37 Wear suitable gloves.
     S 45 In case of accident or if you feel unwell, seek medical advice
     immediately (show the label where possible).
     S 7/9 Keep container tightly closed and in a well-ventilated place.
     S 9 Keep container in a well-ventilated place.
     S 28A After contact with skin, wash immediately with plenty of water
     .

WGK (Water Danger/Protection)

     CAS# 7440-21-3: No information available.
Canada - DSL/NDSL
     CAS# 7440-21-3 is listed on Canada's DSL List.
Canada - WHMIS
     This product has a WHMIS classification of B4.
This product has been classified in accordance with the hazard criteria of the Controlled Products Regulations and the MSDS contains all of the information required by those regulations.
Canadian Ingredient Disclosure List
     CAS# 7440-21-3 (listed as Silica, amorphous) is listed on the Canadian Ingredient Disclosure List.

Section 16 - Additional Information

MSDS Creation Date: 4/05/1997
Revision #8 Date: 10/03/2005

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 event shall Fisher 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 Fisher has been advised of the possibility of such damages.

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NAMECAS
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