Ammonium fluorosilicate (16919-19-0). Material Safety Data Sheet from LCI, Ltd.

Ammonium fluorosilicate (CAS No. 16919-19-0). Material Safety Data Sheet from LCI, Ltd.

Ammonium Fluorosilicate


Section I	Product Name and Description
Section II	Personal Protection Information
Section III	Health Information
Section IV	Emergency and First Aid Procedures
Section V	Ingredients
Section VI	Physical Data
Section VII	Reactivity
Section VIII	Fire and Explosion Hazards
Section IX	Storage and Special Precautions
Section X	Transportation Requirements
Section XI	Emergency Action - Spill or Leak

Section II

PERSONAL PROTECTION INFORMATION

Respiratory Protection: A NIOSH approved respirator should be worn. Self-contained breathing apparatus may be required when chemical is heated to decomposition or in a spill area.

Eye and Face Protection: Splash-proof goggles should be worn when there is danger of splash from solution containing chemical. Protection against splash or mist from solution containing chemical with 8-inch minimum face shield is recommended. Eye protection should be worn in presence of dry chemical, or solution containing chemical, at all times.

Hand, Arm and Body Protection: Impervious gloves should be worn. Protective, impervious clothing should be worn in presence to prevent contact with skin (coveralls, boots, etc.)

Other Protective Clothing and Equipment: Protect open wounds. Heating to decomposition requires full protective clothing and self-contained breathing apparatus.

Engineering Controls: Adequate ventilation to maintain fluoride concentrations below applicable standards.

Section III

HEALTH INFORMATION

OSHA Permissible Exposure Limit (PEL): 2.5mg/m³(as F)

ACGIH Threshold Limit Value (TLV): 2.5mg/m³(as F)

Listing in the following:

International Agency for Research on Cancer Monographs (IARC)	No
National ology Program's Annual Report on Carcinogens (NTP)	No
OSHA Subpart Z	No
Massachusetts "Right to Know" laws	No
New Jersey "Right to Know" laws	No
toxic Substances Control Act Inventory of toxic Substances (TSCA)	Yes
Superfund Amendments and Reauthorization Act (SARA)	No
Comprehensive Env. Response, Compensation & Liability Act (CERCLA)	Yes
California's Proposition 65 for carcinogens and toxicants	No
Resource Conservation and Recovery Act (RCRA)	No
Workplace Hazardous Materials Information System (WHMIS)	No

OSHA Health Hazard Classification: N/A

Primary Route(s) of Entry: Eye and skin contact, inhalation

Symptoms of Exposure: Prickling or burning sensation of skin and mucous membranes. Coughing, sneezing,tightness of chest, difficulty in breathing.

Acute: Inhalation of dust or mist may cause severe mucous membrane irritation and burns. Effects may not be immediately apparent, especially with diluted solutions. First aid procedures should be followed even in cases of suspected contact.

Chronic: Causes severe skin irritation and burns. Ingestion or inhalation may be harmful and possibly fatal depending on severity and length of over-exposure. Chronic over- exposure may cause fluorosis. Product may be absorbed through the skin and produce signs of fluorosis such as weight loss, brittleness of bones, anemia, weakness and stiffness of joints. Internal bleeding may develop. First aid procedures should be followed even in cases of suspected contact.

Aggravated Medical Condition: Any skin disorder, respiratory and/or mucous membrane condition.

Toxic Data: LD₅₀ 150 mg/kg (Oral - Rat)

Section IV

EMERGENCY AND FIRST AID PROCEDURES

Inhalation: Remove exposed person promptly to fresh air. If breathing has stopped, perform artificial respiration. Oxygen should be provided for a person having difficulty breathing (but only administered by an authorized individual) until the person is able to breathe easily by themselves. Keep the affected person warm and at rest. Get medical attention as soon as possible.

Eye Contact: If chemical or solution containing chemical contacts the eyes, immediately flush eyes with large amounts of water, lifting the upper and lower lids at periodic intervals to insure contact of water with all accessible tissue of the eyes and lids. Medical attention should be given as soon as possible, preferably an eye specialist.

Skin Contact: If chemical, or solution containing chemical, gets on the skin, promptly wash the contaminated skin using soap or mild detergent and water. If chemical, or solution containing chemical soaks through clothing, remove the clothing promptly and wash the skin using soap or mild detergent and water. Medical attention should be given as soon as possible for all burns, regardless of how minor they seem.

Ingestion: Do NOT induce vomiting. If conscious, give the exposed person large quantities of water immediately. Several glasses of milk may be given for its soothing effect. A physician should be contacted immediately.

Note to Physician: Exposed person should be observed for 48 - 72 hours for delayed onset of pulmonary edema.

Section V

INGREDIENTS

Composition					Percentage
Ammonium Fluorosilicate (NH₄)₂SiF₆					98.00 min.
Fluorine					62.70 min.
Free Acid (as HF)					0.20
Humidity (H₂O)					0.40
Iron Oxide Fe₂O₃					10 ppm
Sulfates (as SO₄)					10 ppm
Phosphates (as PO₄)					200 ppm

Section VI

PHYSICAL DATA

Boiling Point: Decomposes @ 100°C	Melting Point: Decomposes @ 100°C
Specific Gravity (H₂O=1): 2.01 @ 20°C	Vapor Pressure (mm Hg): N/A
Percent Volatile by Volume: N/A	Vapor Density (Air=1) N/A
Solubility in Water: 250 grams/liter @ 20°C	Evaporation Rate: N/A
Physical State: Granules	Molecular Weight: 178.14
Bulk Density Not determined	pH (10% Solution): 2.9

Appearance and Odor: Crystalline white, lightly odored granules.

Section VII

REACTIVITY

Stability: Stable.

Hazardous Polymerization: Will not occur.

Conditions and Materials to Avoid: Strong acids, water, heat in excess of 100°C. These situations will cause highly toxic hydrogen fluoride gas to form and/or hydrofluoric acid, which is very corrosive.

Hazardous Decomposition Products: Temperatures above 100°C, such as fires, will cause decomposition and release highly toxic hydrogen fluoride gas to form and/or hydrofluoric acid, which is very corrosive.

Section VIII

FIRE AND EXPLOSION HAZARDS

Flash Point and Method Used: N/A

Flammable Limits - % Volume in Air: Lower N/A Upper N/A

Extinguishing Media: This chemical is not flammable, but for fires in area where this chemical is stored, foam, dry chemicals or CO₂ may be used.

Unusual Fire and Explosion Hazards: When this product is heated to temperatures exceeding 100°C, it will emit very toxic fumes of fluorine and nitrogen oxides. Firefighters should avoid all bodily contact, wear full protective clothing and self-contained breathing apparatus.

Special Fire Fighting Procedures and Precautions: Although this chemical is not flammable, when heated to temperatures exceeding 100°C, it will emit very toxic fumes of fluorine and nitrogen oxides. Firefighters should avoid all bodily contact, wear full protective clothing and NIOSH approved self-contained breathing apparatus.

Auto Ignition Temperature: N/A

Section IX

STORAGE AND SPECIAL PRECAUTIONS

Handling and Storing Precautions: Store in a cool, dry place and away from acids. Use only with adequate ventilation, dust mask or self-contained breathing apparatus. Protective clothing should always be worn. Avoid contact with eyes, skin, and clothing. Keep bag or container closed when not in use. Avoid breathing dust or mist.

Ventilation: Provide adequate general and/or local exhaust to maintain vapors below acceptable air level maximums.

Other Precautions: If chemical should become heated in excess of 100°C, it will decompose, releasing highly toxic hydrogen fluoride gas. If contact with water occurs, hydrofluoric acid will form, which is highly corrosive.

Section X

TRANSPORTATION REQUIREMENTS

DOT Proper Shipping Name: Ammonium Fluorosilicate	Packing Group: III
DOT Hazard Class: 6.1 (Poison)	Subsidiary Hazard Class: N/A
Identification Number: UN 2854	Placarding Requirement: Toxic.
EPA Hazardous Substance: Yes	IMDG Placarding Requirement: Toxic.
RCRA Status of Unused Material if Discarded: Not Listed	Hazardous Waste Number: Not Listed
Reportable Quantity: N/A

Waste Disposal Method: Used or unused product should be tested to determine hazard status and disposer must comply with federal, state, and local disposal or discharge laws.
Additional Comments: For International transportation, Ammonium Fluorosilicate is regulated by the International Maritime Organization (IMO) and the International Air Transport Association (IATA)for vessel and air movement as a Class 6.1 toxic and not marked as a marine pollutant, (MDG pg. 6250). Packaging, marking, labelling and shipping paper descriptions must precisely reflect the regulation for export movement.

Section XI

EMERGENCY ACTION - SPILL OR LEAK

Emergency Action: Keep unnecessary people away. Stay upwind, keep out of low areas. Isolate hazard area and deny entry. Ventilate closed spaces before entering them. We recommend that the user establish a spill prevention, control and countermeasure plan. This plan should include procedures for proper storage as well as containment and cleanup of spills and leaks. The procedures should conform to safe practices and provide for proper recovery and disposal in accordance with federal, state and local regulation. Contact Chemtrec at 1-800-424-9300 for 24-hour emergency assistance.

Small Spills: Employees should be trained in safety procedures for the storage and handling of this product. Any personnel in area should wear a NIOSH approved breathing apparatus and protective clothing. Isolate product spill area. Carefully shovel material and place in clean, dry container and cover. Remove container from spill site and dispose of in accordance with federal, state and local regulations. Contact Chemtrec at 1-800-424-9300 for 24-hour emergency assistance.

Large Spills: Contact Chemtrec at 1-800-424-9300 for 24-hour emergency assistance. Employees should be trained in safety procedures for the storage and handling of this product. Any personnel in area should wear a NIOSH approved breathing apparatus and protective clothing. Isolate product spill area. Carefully shovel material and place in clean, dry container and cover. Remove container from spill site and dispose of in accordance with federal, state and local regulations.

DISCLAIMER
The information presented herein is based on data considered to be accurate and that reflects the requirements of the OSHA Hazard Communication Standards in effect as of the date of preparation of this Material Safety Data Sheet. However, no warranty or representation, express or implied, is made as to the accuracy or completeness of the foregoing data and safety information. In addition, no responsibility can be assumed by vendor for any damage or injury resulting from abnormal use, from any failure to adhere to recommended practices, or from any hazards inherent in the nature of the product.

DOT Chemical Name:	Ammonium Fluorosilicate
Synonyms:	Ammonium Silicofluoride, Ammonium Fluosilicate, Ammonium Hexafluorosilicate
Chemical Family:	Inorganic Fluoride	Formula: (NH₄)₂SiF₆
CAS Number:16919-19-0		NIOSH Registry Number:G Q 9450000

MATERIAL SAFETY DATA SHEET