Safety Guideline

HYDROFLUORIC ACID, 48 WT. % IN WATER, 99.99+%

Synonym:

Synonyms * Acide fluorhydrique (French) * Acido fluoridrico (Italian) * Fluorowodor (Polish) * Fluorwasserstoff (German) * Fluorwaterstof (Dutch) * Hydrofluoride * Hydrogen fluoride (ACGIH:OSHA) * RCRA waste number U134 * Rubigine

CAS Number : 7664-39-3

HAZARD (GHS)

EXPOSURE CONTROLS/PERSONAL PROTECTION

Toxic if swallowed / Cause serious eye damage / May cause an allergic skin reaction / Suspected of causing genetic defects / Cause damage to organ (bone, teeth, hypophysis, thyroid gland, kidney, nervous system, liver, testis, bronchus, respiratory, pancreas) / harmful to aquatic life

ENGINEERING CONTROLS
     Use only in a chemical fume hood. Safety shower and eye bath.
GENERAL HYGIENE MEASURES
     Wash contaminated clothing before reuse. Discard contaminated shoes. Wash thoroughly after handling.
PERSONAL PROTECTIVE EQUIPMENT
     Respiratory: Government approved respirator.
     Hand: Compatible chemical-resistant gloves.
     Eye: Chemical safety goggles.
     Other: Faceshield (8-inch minimum).

HANDLING
     User Exposure: Do not breathe vapor. Do not get in eyes, on skin, on clothing. Avoid prolonged or repeated exposure.
STORAGE
     Suitable: Keep tightly closed. Store away from heat. Store in a cool dry place.
     Unsuitable: Do not store in glass Incompatible Materials: Glass

FIRE FIGHTING MEASURES

FIRST-AID MEASURES

PROCEDURE(S) OF PERSONAL PRECAUTION(S)
     Wear self-contained breathing apparatus, rubber boots, and heavy rubber gloves.
METHODS FOR CLEANING UP
     Cover with dry lime or soda ash, pick up, keep in a closed container, and hold for waste disposal. Ventilate area and wash spill site after material pickup is complete.
PROCEDURE TO BE FOLLOWED IN CASE OF LEAK OR SPILL
     Evacuate area.

EXTINGUISHING MEDIA
     Suitable: Dry chemical powder.
FLASH POINT
     N/A
AUTOIGNITION TEMP
     N/A
FLAMMABILITY
     N/A
FIREFIGHTING
     Protective Equipment: Wear self-contained breathing apparatus and protective clothing to prevent contact with skin and eyes.
     Specific Hazard(s): Emits toxic fumes under fire conditions.
EXPLOSION HAZARDS
     Container explosion may occur under fire conditions.

ORAL EXPOSURE
     If swallowed, wash out mouth with water provided person is conscious. Call a physician immediately. Do not induce vomiting.
INHALATION EXPOSURE
     If inhaled, remove to fresh air. If not breathing give artificial respiration. If breathing is difficult, give oxygen.
DERMAL EXPOSURE
     In case of skin contact, flush with copious amounts of water for at least 15 minutes. Remove contaminated clothing and shoes. Call a physician.
EYE EXPOSURE
     In case of contact with eyes, flush with copious amounts of water for at least 15 minutes. Assure adequate flushing by separating the eyelids with fingers. Call a physician.
INFORMATION FOR PHYSICIAN
     Hydrofluoric (HF) acid burns require immediate and specialized first aid and medical treatment. Symptoms may be delayed up to 24 hours depending on the concentration of HF. After decontamination with water, further damage can occur due to penetration/absorption of the fluoride ion. Treatment should be directed toward binding the fluoride ion as well as the effects of exposure. Skin exposures can be treated with a 2.5% calcium gluconate gel repeated until burning ceases. More serious skin exposures may require subcutaneous calcium gluconate except for digital areas unless the physician is experienced in this technique, due to the potential for tissue injury from increased pressure. Absorption can readily occur through the subungual areas and should be considered when undergoing decontamination. Prevention of absorption of the fluoride ion in cases of ingestion can be obtained by giving milk, chewable calcium carbonate tablets or Milk of Magnesia to conscious victims. Conditions such as hypocalcemia, hypomagnesemia and cardiac arrhythmias should be monitored for, since they can occur after exposure.

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Reference: Sigma-Aldrich, Catalog #339261

The information contained herein is based on data considered accurate.
However,no warranty is expressed or implied regarding the accuracy of these data or the results to be obtained from the use thereof.
Thailand Research Fund/Chulalongkorn University assume no responsibility for personal injury or property damage to users or third parties caused by the material.
Such users assume all risks associated with the use of the material.