**** SECTION 2 - COMPOSITION, INFORMATION ON INGREDIENTS ****
+----------------+--------------------------------------+----------+-----------+
| CAS# | Chemical Name | % | EINECS# |
|----------------|--------------------------------------|----------|-----------|
| 7664-39-3 |Hydrogen fluoride | 99.8 | 231-634-8 |
+----------------+--------------------------------------+----------+-----------+
Hazard Symbols: T+ C
Risk Phrases: 26/27/28 35
**** SECTION 3 - HAZARDS IDENTIFICATION ****
EMERGENCY OVERVIEW
Very toxic by inhalation, in contact with skin and if swallowed.
Causes severe burns.Corrosive.
Potential Health Effects
Eye:
Contact with liquid or vapor causes severe burns and possible
irreversible eye damage. Solutions as dilute as 2% or lower may
cause burns.
Skin:
May be fatal if absorbed through the skin. Causes severe burns with
delayed tissue destruction. Substance is rapidly absorbed through
the skin. Penetration may continue for several days. Causes severe
tissue necrosis and bone destruction. Both liquid and vapor can cause
severe burns, which may not be immediately painful or visible. May
cause hypocalcemia and death. Solutions as dilute as 2% or lower may
cause burns.
Ingestion:
Causes severe digestive tract burns with abdominal pain, vomiting,
and possible death. May cause systemic toxic effects on the heart,
liver, and kidneys. Ingestion of large amounts of fluoride may cause
salivation, nausea, vomiting, abdominal pain, fever, labored
breathing. Inorganic fluorides can be harmful. Acute exposure to
fluorine compounds can lead to digestive tract burns, and abdominal
pain. Contains fluoride. Human fatalities have been reported from
acute poisoning.
Inhalation:
May cause severe irritation of the upper respiratory tract with
pain, burns, and inflammation. May cause pulmonary edema and severe
respiratory disturbances. Depletes calcium levels in the body which
can lead to hypocalcemia and death.
Chronic:
Chronic inhalation and ingestion may cause chronic fluoride
poisoning (fluorosis) characterized by weight loss, weakness,
anemia, brittle bones, and stiff joints. Repeated inhalation may
cause chronic bronchitis. Prolonged or repeated exposure may cause
permanent bone structure abnormalities. Chronic exposure to fluoride
compounds may cause systemic toxicity. Repeated inhalation may cause
osteofluorosis and permanent respiratory damage. To the best of our
knowledge, the chronic toxicity of this substance has not been fully
investigated.
**** SECTION 4 - FIRST AID MEASURES ****
Eyes:
Get medical aid immediately. Do NOT allow victim to rub eyes or keep
eyes closed. If a physician is not immediately available, apply one
or two drops of 0.5% tetracaine hydrochloride solution followed by a
second irrigation until medical attention arrives. Tetracaine
hydrochloride will provide ocular anesthesia for 20 min. to an hour.
Skin:
Discard contaminated clothing in a manner which limits further
exposure. Destroy contaminated shoes. Spills of HF should be flushed
until medical attention arrives. SPEEDY ACTION IS CRITICAL! GET
MEDICAL ATTENTION IMMEDIATELY. If available, after thorough washing
(PREFERRED METHOD), a 2.5% calcium gluconate gel should be
continuously massaged into the burned area, or the burned area should
be immersed in a solution of 0.2% iced aqueous benzethonium chloride.
Immersion may also be done with 0.13% iced aqueous Benzalkonium
chloride. If immersion is not practical, towels should be soaked with
one of the aforementioned solutions and used as compresses for the
burned area. Ideally compresses should be changed every two minutes.
It is suggested that a certain quantity of either prepared solution
or the calcium gluconate be kept on hand at all times. These should
be replaced annually if not previously used.
Ingestion:
Do not induce vomiting. If victim is conscious and alert, give 2-4
cupfuls of milk or water. Never give anything by mouth to an
unconscious person. Get medical aid immediately. SPEED IS ESSENTIAL.
A DOCTOR MUST BE NOTIFIED AT ONCE.
Inhalation:
Remove from exposure and move to fresh air immediately. If not
breathing, give artificial respiration. If breathing is difficult,
give oxygen. Do NOT use mouth-to-mouth resuscitation. SPEED IS
ESSENTIAL, OBTAIN MEDICAL AID IMMEDIATELY.
Notes to Physician:
Due to delayed and persistent symptoms, observe patient closely for
48 hours. Prompt action is essential in all cases of contact.
Antidote:
Always have calcium gluconate gel on hand. The use of infilitration
therapy and intraarterial therapy for hydrofluoric acid burns
resulting from concentrations greater than 20% should be made by
qualified medical personnel. Calcium gluconate may be administered
intravenously slowly to bind to the fluoride ion. This
administration needs to be monitored under the supervision of a
physician.
**** SECTION 5 - FIRE FIGHTING MEASURES ****
General Information:
As in any fire, wear a self-contained breathing apparatus in
pressure-demand, MSHA/NIOSH (approved or equivalent), and full
protective gear. During a fire, irritating and highly toxic gases
may be generated by thermal decomposition or combustion. Reacts with
most metals to form highly flammable hydrogen gas which can form
explosive mixtures with air. Containers may explode in the heat of a
fire. Vapors may be heavier than air. They can spread along the
ground and collect in low or confined areas. Material will react
with water and may release flammable and/or toxic gas. Evolves heat
when combined with water.
Extinguishing Media:
Use water spray to cool fire-exposed containers. Substance is
nonflammable; use agent most appropriate to extinguish surrounding
fire.
**** SECTION 6 - ACCIDENTAL RELEASE MEASURES ****
General Information: Use proper personal protective equipment as indicated
in Section 8.
Spills/Leaks:
Avoid runoff into storm sewers and ditches which lead to waterways.
Wear a self contained breathing apparatus and appropriate personal
protection. (See Exposure Controls, Personal Protection section).
Neutralize spill with sodium bicarbonate. Use water spray to disperse
the gas/vapor. Remove all sources of ignition. Absorb spill using an
absorbent, non-combustible material such as earth, sand, or
vermiculite. Do not use combustible materials such as sawdust.
Provide ventilation. Material will fume during neutralization.
Approach from upwind position.
**** SECTION 7 - HANDLING and STORAGE ****
Handling:
Wash thoroughly after handling. Remove contaminated clothing and
wash before reuse. Do not breathe dust, vapor, mist, or gas. Do not
get in eyes, on skin, or on clothing. Keep container tightly closed.
Do not allow contact with water. Use only in a chemical fume hood.
Discard contaminated shoes. Use caution when opening.
Storage:
Store in a cool, dry, well-ventilated area away from incompatible
substances. Corrosives area. Do not store in metal or glass
containers.
**** SECTION 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION ****
Engineering Controls:
Use process enclosure, local exhaust ventilation, or other
engineering controls to control airborne levels below recommended
exposure limits. Facilities storing or utilizing this material should
be equipped with an eyewash facility and a safety shower. Use only
under a chemical fume hood.
Exposure Limits
CAS# 7664-39-3:
United Kingdom, OES - TWA: 1.8 ppm TWA (as F); 1.5 mg/m3 TWA (as
United Kingdom, OES - STEL: 3 ppm STEL (as F); 2.5 mg/m3 STEL (as
United States OSHA: 3 ppm TWA
Belgium - STEL: 3 ppm VLE; 2.6 mg/m3 VLE
France - VLE: 3 ppm VLE; 2.5 mg/m3 VLE
Germany: 3 ppm TWA; 2.5 mg/m3 TWA
Germany: Skin absorber
Japan: 3 ppm Ceiling; 2.5 mg/m3 Ceiling
Malaysia: 3 ppm Ceiling (as F); 2.3 mg/m3 Ceiling (as F)
Netherlands: 3.3 ppm STEL; 2.5 mg/m3 STEL (as F)
Russia: 0.5 mg/m3 TWA
Russia: 0.1 mg/m3 STEL
Spain: 1.8 ppm VLA-ED; 1.5 mg/m3 VLA-ED
Spain: 3 ppm VLA-EC; 2.5 mg/m3 VLA-EC
Personal Protective Equipment
Eyes:
Wear appropriate protective eyeglasses or chemical
safety goggles as described by OSHA's eye and face
protection regulations in 29 CFR 1910.133 or European
Standard EN166.
Skin:
Wear appropriate protective gloves to prevent skin
exposure.
Clothing:
Wear a chemical apron. Wear appropriate protective
clothing to prevent skin exposure.
Respirators:
Follow the OSHA respirator regulations found in 29
CFR 1910.134 or European Standard EN 149. Always use
a NIOSH or European Standard EN 149 approved
respirator when necessary.
**** SECTION 9 - PHYSICAL AND CHEMICAL PROPERTIES ****
Physical State: Liquid below 19.5C
Color: colorless
Odor: penetrating odor - strong odor
pH: <1(Aq.Soln-10g/100ml
Vapor Pressure: 150pKa @ 30 deg C
Viscosity: Not available.
Boiling Point: 19.5 deg C
Freezing/Melting Point: -83 deg C
Autoignition Temperature: Not available.
Flash Point: Not available.
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature:
Solubility in water: Soluble.
Specific Gravity/Density: 975kg/m3 @ 14C
Molecular Formula: HF
Molecular Weight: 20.0054
**** SECTION 10 - STABILITY AND REACTIVITY ****
Chemical Stability:
Stable at room temperature in closed containers under normal storage
and handling conditions.
Conditions to Avoid:
Metals.
Incompatibilities with Other Materials:
Glass, concrete and other silicon-bearing materials will yield
silicon tetrafluoride. Pressure build up from this process has been
known to blow up glass containers., Carbonates, sulfides, and
cyanides will yield toxic gases such as carbon dioxide, hydrogen
sulfide, and hydrogen cyanide. Alkalis, some oxides, fluorine and
other water-reactive materials will cause strong exothermic reactions
that can be violent., Reacts with most common metals to produce
hydrogen gas. Is corrosive to many materials including leather,
rubber, and many organics., Substance is incompatible with over 35
specific chemicals. Please refer to the NFPA Fire Protection Guide
for specifics..
Hazardous Decomposition Products:
Hydrogen fluoride gas, fluoride fumes.
Hazardous Polymerization: Has not been reported.
**** SECTION 11 - TOXICOLOGICAL INFORMATION ****
RTECS#:
CAS# 7664-39-3: MW7875000
LD50/LC50:
CAS# 7664-39-3: Inhalation, mouse: LC50 = 342 ppm/1H; Inhalation,
mouse: LC50 = 5000 mg/m3/5M; Inhalation, mouse: LC50 = 270
mg/m3/60M; Inhalation, rat: LC50 = 1276 ppm/1H; Inhalation, rat: LC50
= 1100 mg/m3/60M.
Not available.
Carcinogenicity:
Hydrogen fluoride -
Not listed by ACGIH, IARC, or NTP.
Other:
See actual entry in RTECS for complete information.
**** SECTION 12 - ECOLOGICAL INFORMATION ****
Ecotoxicity:
Fish (fresh water) 60 ppm lethal (time period not specified).
**** SECTION 13 - DISPOSAL CONSIDERATIONS ****
Products which are considered hazardous for supply are classified as Special
Waste and the disposal of such chemicals is covered by regulations which may
vary according to location. Contact a specialist disposal company or the local
waste regulator for advice. Empty containers must be decontaminated before
returning for recycling.
**** SECTION 14 - TRANSPORT INFORMATION ****
IATA
Shipping Name: HYDROGEN FLUORIDE, ANHYDROUS
Hazard Class: 8
UN Number: 1052
Packing Group: II
IMO
Shipping Name: HYDROGEN FLUORIDE, ANHYDROUS
Hazard Class: 8
UN Number: 1052
Packing Group: II
RID/ADR
Shipping Name: HYDROGEN FLUORIDE, ANHYDROUS
Hazard Class: 8,6
UN Number: 1052
Packing group:
USA RQ: CAS# 7664-39-3: 100 lb final RQ; 45.4 kg final RQ
**** SECTION 15 - REGULATORY INFORMATION ****
European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: T+ C
Risk Phrases:
R 26/27/28 Very toxic by inhalation, in contact with
skin and if swallowed.
R 35 Causes severe burns.
Safety Phrases:
S 7/9 Keep container tightly closed and in a
well-ventilated place.
S 26 In case of contact with eyes, rinse immediately
with plenty of water and seek medical advice.
S 36/37 Wear suitable protective clothing and
gloves.
S 45 In case of accident or if you feel unwell, seek
medical advice immediately (show the label where
possible).
WGK (Water Danger/Protection)
CAS# 7664-39-3: 1
Canada
CAS# 7664-39-3 is listed on Canada's DSL List.
CAS# 7664-39-3 is listed on Canada's Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 7664-39-3 is listed on the TSCA inventory.
**** SECTION 16 - ADDITIONAL INFORMATION ****
MSDS Creation Date: 5/22/2001 Revision #5 Date: 4/24/2003
The information above is believed to be accurate and represents the best
information currently available to us. However, we make no warranty of
merchantability or any other warranty, express or implied, with respect to
such information, and we assume no liability resulting from its use. Users
should make their own investigations to determine the suitability of the
information for their particular purposes. In no way shall the company be
liable for any claims, losses, or damages of any third party or for lost
profits or any special, indirect, incidental, consequential or exemplary
damages, howsoever arising, even if the company has been advised of
the possibility of such damages.
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