4 Extreme Health 3 3 High Fire 0 2 Moderate Reactivity 1 1 Slight Other 0 - Least
4 Extreme Health 3
3 High Fire 0
2 Moderate Reactivity 1
1 Slight Other
0 - Least
SECTION 1 - MATERIAL IDENTIFICATION
NAME: HYDROFLUOROSILICIC ACID
FORMULA: H2 SiF6 M.W. = 144.06
SYNONYMS: HFS; Florosilicic Acid; Fluosilicic Acid; Hexafluosilicic Acid
MANUFACTURERS: LCI Ltd; Solvay Fluorides
SECTION 2 -
FLUOROSILICIC ACID 16916-83-4 >23+% 2.5 mg/m3 NO
SECTION 3 CHEMICAL AND PHYSICAL PROPERTIES
Appearance: Clear, colorless to straw yellow fuming liquid Boiling Point (oF): 222 oF
Odor: Pungent, burning, irritating odor Freezing Point (oF): - 4 oF
pH: 1.2 (1% solution) Specific Gravity (H2O=1): 1.234 @ 77 oF
Water solubility: Complete Vapor Pressure, mm Hg, 77oF 24
Vapor Density (air=1) : NA Volatile Organic (VOC) content: NA
Evaporation Rate: NA
Evaporation Rate (Butyl Acetate =
SECTION 4 FIRE AND EXPLOSION HAZARDS
Flash Point (Method): NA Explosive Limits: Lower NA Upper NA
Flammable Limits: NA Auto Ignition Temperature: NA
Extinguishing Media: As appropriate for the surrounding fire.
Special Fire Fighting Procedures and Hazards: Use NIOSH approved self-contained acid suits. Keep containers cool with water using fog nozzles to prevent decomposition above 227 oF.
Unusual Fire & Explosion Hazards: Reacts with metals to form flammable and explosive hydrogen gas. Above 227 oF decomposition occurs to form toxic and corrosive fumes of flurorides.
SECTION 5 REACTIVITY INFORMATION
Stable: X Unstable: Hazardous Polymerization: Occurs: Does not Occur: X
Conditions to Avoid: Temperatures above 227 oF.
Materials to Avoid: Strong alkalis, strong acids, hypochlorites, metal, glass, stoneware.
Decomposition Products: Hazardous toxic and corrosive fumes of hydrogen fluoride, silica tetrafluoride and hydrogen gas. can form above 227 oF due to decomposition.
Hydrofluorosilicic Acid Page 2
SECTION 6 HEALTH HAZARDS PROTECTIVE MEASURES FIRST AID
ACUTE: Liquid or vapors can cause severe irritation and burns that may not be apparent for hours. Can cause severe irritation to the lungs, nose and throat. If swallowed, can cause severe damage to the throat and stomach.
CHRONIC: Prolonged exposure can result in bone changes, corrosive effect on mucous membranes including ulceration of the nose, throat and bronchial tubes, cough, shock, pulmonary edema, fluorosis, coma and death.
EYES: Flush for 15 minutes with large amounts of water. Eyelids should be held apart during the flushing to insure contact of water with all accessible tissue of the eyes and lids. Use tight-fitting chemical splash goggles and a full-face shield. Contact lenses should not be worn. Get immediate medical help.
SKIN: Flush with water for 15 minutes. Remove all contaminated clothing. Medial attention is necessary, even for minor burns. Use rubber or neoprene gloves and apron.
INHALATION: Mist or vapors can cause severe irritation of the respiratory system. Use a NIOSH approved cartridge with a full-face shield. For exposure above 20 ppm use a self-contained breathing apparatus.
INGESTION: If conscious, give the exposed person large quantities of water or milk. DO NOT induce vomiting. Get immediate medical attention.
IN ALL CASES: GET PROMPT MEDICAL ATTENTION IF ADVERSE EFFECTS PERSIST
PHYSICIAN NOTE: beware of late onset of pulmonary edema for up to 48 hours. Treat severe burns similar to hydrofluoric acid exposure.
PRIMARY ROUTES OF ENTRY: Skin, eyes, inhalation, ingestion.
hands and face before eating or drinking.
SECTION 7 PRECAUTIONS FOR SAFE HANDLING, STORAGE AND USE
SPILLS AND LEAKS: Contain to prevent loss to the environment. Collect excess material. Provide adequate ventilation. Use a NIOSH approved respirator if fumes are excessive.
STORAGE AND HANDLING: Keep containers tightly closed. Store at ambient temperatures.
WASTE DISPOSAL: Follow recommendations of local, state and federal regulations.
EMPTY CONTAINERS: Rinse with water. Send to a recycling center or return to Wausau Chemical Corporation.
SECTION 8 REGULATORY INFORMATION
DOT SHIPPING DESCRIPTION: FLOUROSILICIC ACID, 8, UN1778, PG II
LABEL REQUIRED: CORROSIVE
information contained herein is given in good faith, but no warranty,
representation, inducement or license of any kind is made, except that the
information is accurate to the best of Wausau Chemical Corporations
knowledge, or is obtained from sources believed by Wausau Chemical
Corporation to be reliable and accurate. Wausau Chemical Corporation does
not assume any legal responsibility for use or reliance upon the
information being furnished. Customers are encouraged to conduct their own
tests. Before using any product, read the container label directions as
well as the Material Safety Data Sheet.
The information contained herein is given in good faith, but no warranty, representation, inducement or license of any kind is made, except that the information is accurate to the best of Wausau Chemical Corporations knowledge, or is obtained from sources believed by Wausau Chemical Corporation to be reliable and accurate. Wausau Chemical Corporation does not assume any legal responsibility for use or reliance upon the information being furnished. Customers are encouraged to conduct their own tests. Before using any product, read the container label directions as well as the Material Safety Data Sheet.
ND Not Determined NA - Not Applicable NE Not Established