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MATERIAL SAFETY DATA SHEET


I PRODUCT IDENTIFICATION

Calcium Silicide Calcium Disilicide
Trade Name: Synonym:
Metal Silicide CaSi2
Chem ical Nature: Form ula:
12013 -56-8
CAS #:


II HAZAR DOUS INGRED IENTS

Haz ardous C omp onents % OSHA/PEL ACGIH/TLV Sec. 302 Sec. 304 Sec. 313
Calcium Silicide 0-100 N/E N/E No No No

HM IS Ratings: Hea lth: 3 Flam mab ility: 3 Reactivity: 2 Protective Equipment: J: goggles, gloves, apron, respirator


III PHYSICAL DATA

Boiling Point ( oC): N/E or N /A N/E or N /A
Melting Point:
Insoluble in cold, decomposes in hot 2.5 g/cc
Solubility in H 2O: Specific Gravity:
N/E or N /A N/E or N /A
Vapo r Density: Vapor Pressure:
Black/brown pieces and pow der, repulsive odor. N/E or N /A
Appearance and Odor: % V olatiles:


IV FIRE AND EXPLOSION H AZARDS DATA

Flash Point (Method Used): N/E or N /A Autoignition Temperature: N/E or N /A
Explosive Lim its: Lower: N/E Upper: N/E

Extingu ishing Media: DO NO T U SE WAT ER !! Use class D or oth er suitable m etal extingu ishing agen t.
Special Fire Fighting Procedures: We ar a self-con tained breathing apparatus and full pro tective clothing to prev ent co ntact w ith
skin and eyes.

Unusual Fire and Explosion Hazards: May ignite spontaneously in air. Calcium silicide reacts with acids to evolve self-igniting
silane gas. On contact with water it forms hydrogen gas. Reacts violently with fluorine.


V HEALTH HAZARD INFORMATION

Effects of Exposure:

To the best of our knowledge the chemical, physical and toxicological properties of calcium silicide have not been
thoroughly investigated and recorded.

Calcium compounds: The fumes evolved by burning calcium in air are composed of calcium oxide which is an irritant to the
skin, eyes and m uco us m em bran e. Generally speaking, calcium com pou nds shou ld be considered tox ic only when they contain tox ic
components or as calcium oxide or hydroxide. Calcium compounds are common air contaminants. (Sax, Dangerous Properties of
Industrial M aterials, eig ht edition.)

Acute E ffects:
Inhalation: May cause irritation to the respiratory system, sneezing and coughing due to decomposition product Ca(OH) 2.
Ingestion: Decomposition product Ca(OH) 2 may cause burning sensation in mouth, chest and stomach. May cause irritation of the
mo uth, pain in swallow ing and stoma ch cram ps.
Skin : May cause irritation on contact with moist skin.
Eye: May cause irritation.

Chro nic Effects: Inhalation: Prolo nge d or heav y exposure m ay ca use chem ical bro nch itis. No o ther chronic health effects
recorded.

Medical Conditions Generally Aggravated by Exposure: Pre-existing resp iratory disord ers.
Carcino genicity: NTP: No IARC: No OSHA: No

EMERG ENCY AND FIRST AID PROCEDURES:

INHALATION: Remove victim to fresh air; give oxygen if breathing is difficult. Seek medical attention.
INGESTION: If conscious, administer 1-2 glasses of milk or water. DO NO T induce vomiting. Seek medical attention immediately.
SK IN: Brush material off skin and wash area with soap and water. Seek medical attention.
EYE: Flush eyes with lukewarm water for at least 15 minutes and seek medical attention.


VI REACTIVITY DATA

Stability: Stable
Co nditio ns to Av oid: None
Incompatibility (Materials to Avoid): Acids, covalent halides, halogens, boron, fluorine and water.
Haz ardous D ecomposition Produc ts: Ca(OH) 2, hydro gen an d silane gas.
Hazardous Polymerization: Will not occur


VII SPILL OR LEAK PROC EDURES

Steps to Be Taken in Case Material Is Released or Spilled: We ar a self-con tained breathing apparatus and full pro tective clothing.
Isolate the are a where the spill occu rred, insure proper v entilation is available and that w ater/m oisture are kept out of th e area .
Vacuum up the spill using a high efficiency unit and place in a container for proper disposal. Use non-sparking tools. Take care not
to raise dust.

Waste Disposal Method: Dispose o f in accord ance w ith Loca l, State and Federal W aste Dispo sal Regu lations.


VIII SPECIAL PROTECTION INFORMATION

Respiratory Protection (Specify Type): Wear a NIO SH-app roved respirator.
Ventilation: Use process enclosures, local exhaust ventilation, or other engineering controls to control airborne levels below
recommended exposure limits. Handle in an inert gas such as argon, in a dry, controlled atmosphere. General exhaust is not
recommended.

Protective Gloves: Rubber gloves
Eye Protection: Safety goggles

Other Protective Equipment: Wear protective apparel to prevent contamination of skin and clothing.


IX SPECIAL PRECAUTIONS

Precautions to Be Taken in Handling and Storage: Calciu m silicide m ay decomp ose w ith water an d m oisture . Han dle an d store in
a con trolled environme nt and inert atmosphere such as argon g as. W ash h and s and face th orough ly after handling and befo re m eals.
Store in tightly closed containers, in a cool dry place. Store under dry inert atmosphere.


-Calcium Silicide 2-
Wo rk Practices: Imp lem ent en gineering and wo rk practice controls to re duc e and ma intain c onc entration o f exp osure at low levels.
Han dle in a dry , controlled area. Use g ood housekeep ing and sanitation prac tices. Do no t use tobacco or fo od in w ork area. Wash
thoroughly before eating and smoking.

Transpo rtation Requ irements:

Not classified
DO T C lass:
1325
UN N umber:
4.3
IMC O C lass:
Flammable, dangerous when wet
Other:

The abo ve inform ation is believ ed to be co rrect, but do es no t purp ort to b e all inclu sive an d sha ll be used only as a gu ide.
ESPI shall not be held liab le for any d am age resulting from h and ling o r from contact with the abov e pro duc t.


Issued by: S. Dierks
Date: May 2002




-Calcium Silicide 3-

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