Sodium Silicofluoride MSDS

Sodium Silicofluoride MSDS


Section 1: Chemical Product and Company Identification

Product Name: Sodium Silicofluoride

Catalog Codes: SLS4021

CAS#: 16893-85-9

RTECS: VV8410000

TSCA: TSCA 8(b) inventory: Sodium Silicofluoride

CI#: Not available.

Synonym: Sodium Silicofluoride; Sodium

hexafluorosilicate; Sodium fluosilicate; Sodium

hexafluosilicate; Sodium silicon fluoride; Silicon sodium

fluoride; Disodium silicofluoride; Disodium hexafluorosilicat

(2-); Disodiuim silicofluoride

Chemical Name: Silicate (2-), hexafluoro-, disodium

Chemical Formula: Na2SiF6


Section 2: Composition and Information on Ingredients


Name CAS # % by Weight

Sodium Silicofluoride 16893-85-9 100

Toxicological Data on Ingredients: Sodium Silicofluoride: ORAL (LD50): Acute: 125 mg/kg [Rat]. 70 mg/kg [Mouse].


Section 3: Hazards Identification

Potential Acute Health Effects:

Hazardous in case of skin contact (irritant), of eye contact (irritant), of ingestion, of inhalation. Severe

over-exposure can result in death.

Potential Chronic Health Effects:

CARCINOGENIC EFFECTS: A4 (Not classifiable for human or animal.) by ACGIH, 3 (Not classifiable for

human.) by IARC.




Repeated exposure to a highly toxic material may produce general deterioration of health by an accumulation in

one or many human organs.


Section 4: First Aid Measures

Eye Contact:

Check for and remove any contact lenses. In case of contact, immediately flush eyes with plenty of water for at

least 15 minutes. Cold water may be used. Get medical attention.

Skin Contact:

In case of contact, immediately flush skin with plenty of water for at least 15 minutes while removing contaminated

clothing and shoes. Cover the irritated skin with an emollient. Cold water may be used.Wash clothing before

reuse. Thoroughly clean shoes before reuse. Get medical attention immediately.

Serious Skin Contact: Not available.


If inhaled, remove to fresh air. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get

medical attention immediately.

Serious Inhalation:

Evacuate the victim to a safe area as soon as possible. Loosen tight clothing such as a collar, tie, belt or

waistband. If breathing is difficult, administer oxygen. If the victim is not breathing, perform mouth-to-mouth

resuscitation. WARNING: It may be hazardous to the person providing aid to give mouth-to-mouth resuscitation

when the inhaled material is toxic, infectious or corrosive. Seek immediate medical attention.


If swallowed, do not induce vomiting unless directed to do so by medical personnel. Never give anything by

mouth to an unconscious person. Loosen tight clothing such as a collar, tie, belt or waistband. Get medical

attention immediately.

Serious Ingestion: Not available.


Section 5: Fire and Explosion Data

Flammability of the Product: Non-flammable.

Auto-Ignition Temperature: Not applicable.

Flash Points: Not applicable.

Flammable Limits: Not applicable.

Products of Combustion: Not available.

Fire Hazards in Presence of Various Substances: Not applicable.

Explosion Hazards in Presence of Various Substances:

Risks of explosion of the product in presence of mechanical impact: Not available.

Risks of explosion of the product in presence of static discharge: Not available.

Fire Fighting Media and Instructions: Not applicable.

Special Remarks on Fire Hazards:

When heated to decomposition it emits toxic fumes of hydrogen fluoride. When heated to decomposition it emits

highly corrosive fumes.

Special Remarks on Explosion Hazards: Not available.


Section 6: Accidental Release Measures

Small Spill: Use appropriate tools to put the spilled solid in a convenient waste disposal container.

Large Spill:

Poisonous solid.

Stop leak if without risk. Do not get water inside container. Do not touch spilled material. Use water spray to

reduce vapors. Prevent entry into sewers, basements or confined areas; dike if needed. Call for assistance on

disposal. Be careful that the product is not present at a concentration level above TLV. Check TLV on the MSDS

and with local authorities.


Section 7: Handling and Storage


Keep container dry. Do not ingest. Do not breathe dust. Avoid contact with eyes. Never add water to this

product. Wear suitable protective clothing. In case of insufficient ventilation, wear suitable respiratory equipment.

If ingested, seek medical advice immediately and show the container or the label. Keep away from incompatibles

such as acids, alkalis.

May corrode glass. Store in an appropriate container.

Storage: Keep container tightly closed. Keep container in a cool, well-ventilated area.


Section 8: Exposure Controls/Personal Protection

Engineering Controls:

Use process enclosures, local exhaust ventilation, or other engineering controls to keep airborne levels below

recommended exposure limits. If user operations generate dust, fume or mist, use ventilation to keep exposure to

airborne contaminants below the exposure limit.

Personal Protection:

Splash goggles. Lab coat. Dust respirator. Be sure to use an approved/certified respirator or equivalent.


Personal Protection in Case of a Large Spill:

Splash goggles. Full suit. Dust respirator. Boots. Gloves. A self contained breathing apparatus should be used

to avoid inhalation of the product. Suggested protective clothing might not be sufficient; consult a specialist

BEFORE handling this product.

Exposure Limits:

TWA: 2.5 (mg(F)/m) from OSHA (PEL) [United States]

Consult local authorities for acceptable exposure limits.


Section 9: Physical and Chemical Properties

Physical state and appearance: Solid. (Solid crystalline powder.)

Odor: Odorless.

Taste: Tasteless.

Molecular Weight: 188.06 g/mole

Color: White.

pH (1% soln/water): Not available.

Boiling Point: Not available.

Melting Point: Decomposes.

Critical Temperature: Not available.

Specific Gravity: 2.7 (Water = 1)

Vapor Pressure: Not applicable.

Vapor Density: Not available.

Volatility: Not available.

Odor Threshold: Not available.

Water/Oil Dist. Coeff.: Not available.

Ionicity (in Water): Not available.

Dispersion Properties: See solubility in water.


Partially soluble in cold water, hot water.

Insoluble in ethanol.

Soluble in 150 parts cold water, 40 parts boiling water.

Solubility in water: 0.64 g/100 g at 20 deg. C.; 0.76 g/100 g at 25 deg. C; 1.27 g/100 g at 50 deg. C; 2.45 g/100 g

at 100 deg. C.


Section 10: Stability and Reactivity Data

Stability: The product is stable.

Instability Temperature: Not available.

Conditions of Instability: Incompatible materials

Incompatibility with various substances: Reactive with acids, alkalis.

Corrosivity: Not available.

Special Remarks on Reactivity:

Incompatible with strong acids, alkaline materials, iron containing materials. It may react with strong mineral acids

to liberate hydrogen fluoride or hydrofluoric acid which are highly toxic and corrosive.

Special Remarks on Corrosivity: Not available.

Polymerization: Will not occur.


Section 11: Toxicological Information

Routes of Entry: Inhalation. Ingestion.

Toxicity to Animals: Acute oral toxicity (LD50): 70 mg/kg [Mouse].

Chronic Effects on Humans:

CARCINOGENIC EFFECTS: A4 (Not classifiable for human or animal.) by ACGIH, 3 (Not classifiable for

human.) by IARC.

Other Toxic Effects on Humans: Hazardous in case of skin contact (irritant), of ingestion, of inhalation.

Special Remarks on Toxicity to Animals: Not available.

Special Remarks on Chronic Effects on Humans: May cause cancer based on animal test data. No human data found.

Special Remarks on other Toxic Effects on Humans:

Acute Potential Health Effects:

Skin: Causes mild to moderate skin irritation. Symptoms may include redness, burning sensation (feeling), and

sometimes ulcers.

Eyes: Causes moderate to severe irritation.

Inhalation: It can irritate the nose, throat, lungs causing coughing, wheezing and/or shortness of breath

Ingestion: Harmful if swallowed. It is toxic by oral exposure route. Symptoms of acute ingestion include a salty or

soapy taste in the mouth, excessive salivation, nausea, abdominal cramps, vomiting, diarrhea, thirst. It may also

affect behavior/central nervous system (central nervous system depression, muscle weakness, tremors or

spasms, ataxia, convulsions) and may also cause disturbed color vision, kidney damage, liver damage, bleeding

from the stomach, shortness of breath, loss of conciousness or death.

Chronic Potential Health Effects:

Skin: Repeated or prolonged skin contact may produce pustular rash.

Inhalation or Ingestion: Prolonged or repeated exposure may cause excess respiratory, cardiac, and

gastrointestinal disturbances, and chronic bronchitis. It may also cause liver and kidney damage, fluorosis and

osteosclerosis. Fluorosis can cause mottling of teeth.


Section 12: Ecological Information

Ecotoxicity: Not available.

BOD5 and COD: Not available.

Products of Biodegradation:

Possibly hazardous short term degradation products are not likely. However, long term degradation products may


Toxicity of the Products of Biodegradation: The products of degradation are as toxic as the original product.

Special Remarks on the Products of Biodegradation: Not available.


Section 13: Disposal Considerations

Waste Disposal:

Waste must be disposed of in accordance with federal, state and local environmental

control regulations.


Section 14: Transport Information

DOT Classification: CLASS 6.1: Poisonous material.

Identification: : Sodium fluorosilicate UNNA: 2674 PG: III

Special Provisions for Transport: Not available.


Section 15: Other Regulatory Information

Federal and State Regulations:

Massachusetts RTK: Sodium silicofluoride

New Jersey: Sodium silicofluoride

TSCA 8(b) inventory: Sodium silicofluoride

Other Regulations:

OSHA: Hazardous by definition of Hazard Communication Standard (29 CFR 1910.1200).

EINECS: This product is on the European Inventory of Existing Commercial Chemical Substances.

Other Classifications:

WHMIS (Canada):

CLASS D-1B: Material causing immediate and serious toxic effects (TOXIC).

CLASS D-2B: Material causing other toxic effects (TOXIC).


R23/24/25- Toxic by inhalation, in

contact with skin and if swallowed.

S26- In case of contact with eyes, rinse

immediately with plenty of water and seek

medical advice.

S45- In case of accident or if you feel unwell,

seek medical advice immediately (show the

label where possible).

HMIS (U.S.A.):

Health Hazard: 2

Fire Hazard: 0

Reactivity: 0

Personal Protection: E

National Fire Protection Association (U.S.A.):

Health: 2

Flammability: 0

Reactivity: 0

Specific hazard:

Protective Equipment:


Lab coat.

Dust respirator. Be sure to use an

approved/certified respirator or

equivalent. Wear appropriate respirator

when ventilation is inadequate.

Splash goggles.


Section 16: Other Information


-The Sigma-Aldrich Library of Chemical Safety Data, Edition II.

-Hawley, G.G.. The Condensed Chemical Dictionary, 11e ed., New York N.Y., Van Nostrand Reinold, 1987.

Other Special Considerations: Not available.

Created: 10/09/2005 06:35 PM

Last Updated: 11/06/2008 12:00 PM