MATERIAL SAFETY DATA SHEET





Pure Tech                                 Emergency Phone Numbers:

P.O. Box 1950                        CHEMTREC: 800/424-9300

Brewster, New York 10509-8950                  POISON CENTER: 800/562-8236

845/279-0900

                                     Date of Last Revision: 6/28/96



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SECTION 1

PRODUCT IDENTIFICATION



CHEMICAL NAME(S) AND SYNONYM(S):      Silicon                    FORMULA: Si



CHEMICAL FAMILY: Non-metal                  CHEM. ABSTRACT NO.:       7440-21-3



TSCA: Product is listed.                    CAL. MOLECULAR WEIGHT:       28.09



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SECTION 2

INGREDIENTS/SUMMARY OF HAZARDS



INGREDIENT(S)                   CAS #       %         TLV           OSHA PEL

  Silicon Metal                     7440-21-3   100         10mg/m3     15mg/m3

(for Si as total dust)



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SECTION 3

PHYSICAL DATA





BOILING POINT (oC) :     2355               DENSITY (gm/cc):            2.32 -

2.34

VAPOR PRESSURE:          NA                 % VOLATILE BY VOLUME: NA

REACTION WITH WATER:     NA               EVAPORATION RATE:      NA

                                          MELTING POINT (oC):

SOLUBILITY WITH WATER: Insoluble                                 1410

APPEARANCE/ODOR: Dark brown powder; no odor

OTHER:

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SECTION 4

FIRE AND EXPLOSION HAZARD DATA

FLASHPOINT/METHOD:      NA

AUTOIGNITION TEMP (oC): NA

FLAMMABILITY:           May be flammable in fine powder form

EXTINGUISHING MEDIA:  ( ) Water    ( ) Foam     ( ) Class D Extinguisher

                     ( ) Dry Chemical         ( ) CO(2)

                     (x) Other (specify): Use suitable extinguishing

agenfor surrounding materials

         and type of fire.

SPECIAL FIRE FIGHTING PROCEDURES: Wear NIOSH/MSHA approved self-

contained breathing apparatus and full protective clothing. DO NOT USE

WATER!



UNUSUAL FIRE AND EXPLOSION HAZARDS: A potentially flammable metal in the

fine powder form. May generate toxic fumes if involved in a fire.



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 SECTION 5

HEALTH HAZARD DATA



TOXICITY DATA: No data on this compound.



ROUTE(S) OF ENTRY:     (x) Inhalation     (x) Skin    ( ) Ingestion



EFFECTS OF OVEREXPOSURE (acute and chronic)



INHALATION:    Mild pulmonary irritation.     A nuisance dust.



DERMAL/EYE CONTACT: Mild irritation to the eyes. No reports of injury

or illness from ingestion or skin contact.



OTHER (specify):     Silicon is toxicologically inert.



MEDICAL CONDITIONS GENERALLY AGGRAVATED BY EXPOSURE: Previous

respiratory

  or dermal disorders.



CARCINOGENCITY: none     NTP: no     IARC MONOGRAPHS: no     OSHA REGULATED:

no



EMERGENCY AND FIRST AID PROCEDURES:



INGESTION:    Induce vomiting.     Seek Medical attention.

INHALATION: Remove victim to fresh air. Administer oxygen.     Seek

medical attention.



SKIN: Brush material off skin. Wash affected area with soap and water.



EYES:   Flush eyes with water for 15 mins.   Seek medical attention.



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SECTION 6

REACTIVITY DATA

STABILITY:   (x) Stable      ( ) Unstable

CONDITIONS CONTRIBUTING TO UNSTABILITY: ND

INCOMPATIBILITY (materials to avoid):

( ) Water              ( ) Combustible materials       (x) Strong bases

( ) Reducing Agents    (x) Strong oxidizing materials (x) Strong acids

(x) Other (specify): Interhalogens, metal acetylides, alkali metal

carbonates, metal hexafluorides.

HAZARDOUS DECOMPOSITION PRODUCTS: None known



HAZARDOUS POLYMERIZATION:   ( ) May occur     (x) Will not occur



CONDITIONS TO AVOID: None known

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 SECTION 7

SPILL OR LEAK PROCEDURES



STEPS TO BE TAKEN IN CASE MATERIAL IS RELEASED OR SPILLED: Wearing full

protective clothing, isolate the area and insure proper ventilation.

Vacuum up spill and place in a container for proper disposal.

WASTE DISPOSAL METHOD: In accordance with regulations.



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SECTION 8

SPECIAL PROTECTIVE INFORMATION



RESPIRATORY PROTECTION: (Specify type) NIOSH/MSHA approved respirator



VENTILATION:   LOCAL EXHAUST: Adequate ventilation to keep exposure below

TLV

               MECHANICAL (General):   Recommended

              SPECIAL:



PROTECTIVE GLOVES:   Recommended



EYE PROTECTION:    (x) Safety Glasses with Side Shields

                  ( ) Chemical Workers Dust-Proof Goggles (under dusting

conditions)

                  ( ) Gas-Tight Goggles or Equivalent

                  ( ) Other (specify):



OTHER PROTECTIVE EQUIPMENT: Maintain sink, safety shower and eyewash

fountain in the work area. Wear full protective clothing at all times.



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SECTION 9

SPECIAL PRECAUTIONS AND TRANSPORTATION REGULATIONS

PRECAUTIONS TO BE TAKEN IN HANDLING AND STORING: Store in tightly

closed

  containers in a cool, dry place. Wash hands and face thoroughly.

TRANSPORTATION REQUIREMENTS:

  DOT CLASS: Flammable (powder form)

  UN NUMBER: 1346

  IMCO CLASS: 4.1

  OTHER:      SPC



ND = No Data Found       NA = Not Applicable



                         MATERIAL SAFETY DATA SHEET





Employers should use this information only as a supplement to other

information gathered by them and should make independent judgement of

suitability of this information to ensure proper use and protect the

health and safety of employees. This information is furnished without

warranty, and any use of the product not in conformance with this

Material Safety Data Sheet, or in combination with any other product or

process, is the responsibility of the user.