18972-56-0

Synonym:Magnesium fluorosilicate, Magnesium silicofluoride

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Section 2: Composition and Information on Ingredients
IngredientCAS NumberPercentACGIH (TWA)OSHA (PEL)
Title compound18972-56-0100%2.5mg/m3 (as F)2.5mg/m3 (as F)

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Section 3: Hazards Identification
Irritating to eyes, skin, and respiratory tract. Harmful if swallowed. If inhaled or swallowed, this compound may,
Emergency Overview:to the extent that it may form water soluble fluoride, cause fluoride poisoning. Early symptoms include nausea,
vomiting, diarrhea, and weakness
Primary Routes of Exposure:Contact with skin and eyes. Inhalation of dust.
Eye Contact:Causes irritation and may cause serious eye damage. Effects may not immediately appear.
Causes irritation, with redness and pain. Soluble fluoride may be corrosive. Effects may not appear
Skin Contact:
immediately
Inhalation of dust causes severe irritation to the respiratory tract, causing coughing, sore throat, and labored
Inhalation:
breathing.
Ingestion:Harmful if swallowed. May cause salivation, nausea, vomiting, diarrhea, and abdominal pain.
Irritating to eys, skin and respiratory tract. Dust: Fluoride poisoning may cause nausea, vomiting, diarrhea,
Acute Health Affects:
weakness, coma, respiratory failure and cardiovascular collapse.
Chronic Health Affects:Prolonged exposure to hydrolysable fluorine compounds can cause deterioration of bone and tooth structure.
NTP:No
IARC:No
OSHA:No

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SECTION 4: First Aid Measures
Immediately flush the eyes with copious amounts of water for at least 10-15 minutes. A victim may need
Eye Exposure:
assistance in keeping their eye lids open. Get immediate medical attention.
Wash the affected area immediately with water. Remove contaminated clothing if necessary. Seek medical
Skin Exposure:
assistance if irritation persists.
Remove the victim to fresh air. Closely monitor the victim for signs of respiratory problems, such as difficulty
Inhalation:
in breathing, coughing, wheezing, or pain. In such cases seek immediate medical assistance.
Seek medical attention immediately. Keep the victim calm. Give the victim water (only if conscious). Induce
Ingestion:
vomiting only if directed by medical personnel.

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SECTION 5: Fire Fighting Measures
Flash Point:not applicable
Autoignition Temperature:none
Explosion Limits:none
Extinguishing Medium:None. Material is non-flammable.
If this product is involved in a fire, fire fighters should be equipped with a NIOSH approved positive pressure
Special Fire Fighting Procedures:
self- contained breathing apparatus and full protective clothing.
Hazardous Combustion andIf involved in a fire this material may emit corrosive fumes of hydrofluoric acid.
Decomposion Products:
Unusual Fire or Explosion Hazards: No unusual fire or explosion hazards.

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SECTION 6: Accidental Release Measures
Small spills can be mixed with powdered sodium bicarbonate, lime, or calcium carbonate and swept up. Avoid
Spill and Leak Procedures:raising dust. Spillage in areas not adequately ventilated may require an evacuation of area. Emergency
response teams will require self-contained breathing apparatus.

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SECTION 7: Handling and Storage
Handling and Storage:Store in a tightly sealed non-glass container away from moisture.

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SECTION 8: Exposure Controls and Personal Protection
Eye Protection:Always wear approved safety glasses when handling a chemical substance in the laboratory.
Skin Protection:Wear protective clothing and gloves. Consult with glove manufacturer to determine the proper type of glove.
Ventilation:Solid may form a toxic fine dust. If possible, handle the solid in an efficient fume hood.
If in form of fine dust and ventilation is not available a respirator should be worn. The use of respirators
Respirator:
requires a Respirator Protection Program to be in compliance with 29 CFR 1910.134.
Ventilation:Solid may form a toxic fine dust. If possible, handle the solid in an efficient fume hood.
Additional Protection:No additional protection required.

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SECTION 9: Physical and Chemical Properties
Color and Form:white pwdr.
Molecular Weight:166.39 (274.48)
Melting Point:no data
Boiling Point:no data
Vapor Pressure:no data
Specific Gravity:1.788
Odor:none
Solubility in Water:soluble

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SECTION 10: Stability and Reactivity
Stability:air and moisture stable
Hazardous Polymerization:no hazardous polymerization
Conditions to Avoid:none
Incompatibility:active metals
Decomposition Products:hydrogen fluoride, magnesium fluoride and silicon fluorides

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SECTION 11: Toxicological Information
RTECS Data:Oral (guinea pig); LD50:200 mg/kg. Subcutaneous (frog); LDLo:420 mg/kg.
Carcinogenic Effects:no data
Mutagenic Effects:no data
Tetratogenic Effects:no data

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SECTION 12: Ecological Information
Ecological Information:No information available

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SECTION 13: Disposal Considerations
Disposal:Dispose of according to local, state and federal regulations.

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SECTION 14: Transportation
Shipping Name (CFR):Magnesium fluorosilicate
Hazard Class (CFR):6.1
Additional Hazard Class (CFR):NA
Packaging Group (CFR):III
UN ID Number (CFR):UN# 2853
Shipping Name (IATA):Magnesium fluorosilicate
Hazard Class (IATA):6.1
Additional Hazard Class (IATA):NA
Packaging Group (IATA):III
UN ID Number (IATA):UN# 2853

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SECTION 15: Regulatory Information
TSCA:Listed in the TSCA inventory.
SARA (Title 313):Title compound not listed.
Second Ingredient:none

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SECTION 16 - ADDITIONAL INFORMATION
N/A

MOLECULAR FORMULA :

F6-Si.Mg.6H2-O

MOLECULAR WEIGHT :

274.52

WISWESSER LINE NOTATION :

MG SI-F6 &QH 6

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :

LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :

Oral

SPECIES OBSERVED :

Rodent - guinea pig

DOSE/DURATION :

200 mg/kg

TOXIC EFFECTS :

Details of toxic effects not reported other than lethal dose value

REFERENCE :

28ZEAL "Pesticide Index," Frear, E.H., ed., State College, PA, College Science Pub., 1969 Volume(issue)/page/year: 4,265,1969

TYPE OF TEST :

LDLo - Lowest published lethal dose

ROUTE OF EXPOSURE :

Subcutaneous

SPECIES OBSERVED :

Amphibian - frog

DOSE/DURATION :

420 mg/kg

REFERENCE :

CRSBAW Comptes Rendus des Seances de la Societe de Biologie et de Ses Filiales. (SPPIF, B.P.22, F-41353 Vineuil, France) V.1- 1849- Volume(issue)/page/year: 124,133,1937 *** U.S. STANDARDS AND REGULATIONS *** OSHA PEL (Gen Indu):8H TWA 2.5 mg(F)/m3 CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 29,1910.1000,1994 OSHA PEL (Construc):8H TWA 2.5 mg(F)/m3 CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 29,1926.55,1994 OSHA PEL (Shipyard):8H TWA 2.5 mg(F)/m3 CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 29,1915.1000,1993 OSHA PEL (Fed Cont):8H TWA 2.5 mg(F)/m3 CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 41,50-204.50,1994 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH RECOMMENDED EXPOSURE LEVEL (REL) : NIOSH REL TO FLUORIDES, INORGANIC-air:10H TWA 2.5 mg(F)/m3 REFERENCE : NIOSH* National Institute for Occupational Safety and Health, U.S. Dept. of Health, Education, and Welfare, Reports and Memoranda. Volume(issue)/page/year: DHHS #92-100,1992 NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOHS - National Occupational Hazard Survey (1974) NOHS Hazard Code - M1631 No. of Facilities: 337 (estimated) No. of Industries: 6 No. of Occupations: 8 No. of Employees: 8457 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - M1631 No. of Facilities: 12 (estimated) No. of Industries: 1 No. of Occupations: 1 No. of Employees: 310 (estimated)