**** SECTION 2 - COMPOSITION, INFORMATION ON INGREDIENTS ****
+----------------+--------------------------------------+----------+-----------+
| CAS# | Chemical Name | % | EINECS# |
|----------------|--------------------------------------|----------|-----------|
|----------------|--------------------------------------|----------|-----------|
| 7664-39-3 |Hydrofluoric acid | 47-51 | 231-634-8 |
|----------------|--------------------------------------|----------|-----------|
| 7732-18-5 |Water | 49-53 | 231-791-2 |
+----------------+--------------------------------------+----------+-----------+
Text for R-phrases: see Section 16
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.
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.
Solutions as dilute as 2% or lower may cause burns. Systemic
fluoride toxicity from exposure to hydrofluoric acid may result in
severe hypocalcemia, hypomagnesemia, hyperkalemia, metabolic
acidosis, cardiac dysrhythmias, and death. Burns caused by weak
hydrofluoric acid may go unnoticed for several hours. Therefore,
first aid procedures must be followed if any contact is suspected.
Ingestion:
Causes severe digestive tract burns with abdominal pain, vomiting,
and possible death. Human fatalities have been reported from acute
poisoning. Systemic fluoride toxicity from exposure to hydrofluoric
acid may result in severe hypocalcemia (depletion of calcium in the
blood), hypomagnesemia, hyperkalemia, metabolic acidosis, cardiac
dysrhythmias, and death.
Inhalation:
May be fatal if inhaled. 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.
Concentrations of hydrofluoric acid above 40% fume in air.
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. Chronic exposure to fluoride compounds may
cause systemic toxicity. Skeletal effects may include bone
brittleness, joint stiffness, teeth discoloration, tendon
calcification, and osterosclerosis. Chronic ingestion or inhalation
may cause weight loss, malaise, anemia, leukopenia (reduction in the
number of white blood cells in the blood), discoloration of the
teeth and osteosclerosis (the hardening or abnormal density of
bone). Repeated inhalation may cause osteofluorosis and permanent
respiratory damage.
**** SECTION 4 - FIRST AID MEASURES ****
Eyes:
Do NOT allow victim to rub eyes or keep eyes closed. Spills of HF
should be flushed until medical attention arrives. SPEEDY ACTION IS
CRITICAL! GET MEDICAL ATTENTION IMMEDIATELY! 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. Before using HF, make
sure the solutions, gels and first aid attendant are available in
case of exposure.
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:
SPEED IS ESSENTIAL, OBTAIN MEDICAL AID IMMEDIATELY. POISON material.
If inhaled, get medical aid immediately. Remove victim to fresh air.
If not breathing, give artificial respiration. If breathing is
difficult, give oxygen. Calcium gluconate, 2.5% in normal saline may
be given by nebulizer with oxygen.
Notes to Physician:
Due to delayed and persistent symptoms, observe patient closely for
48 hours. Prompt action is essential in all cases of contact.
Irrigate eyes with 1% calcium gluconate in normal saline for 1 to 2
hours to prevent or lessen corneal damage. For burns of large skin
areas, for ingestion & inhalation exposure, severe systemic effects
may occur. Monitor & correct for hypocalcemia, cardiac arrhythmias,
hypomagnesemia & hyperkalemia. For inhalation exposures, treat as
chemical pneumonia.
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. Use water spray to keep fire-exposed containers
cool. 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. Approach fire
from upwind to avoid hazardous vapors and toxic decomposition
products.
Extinguishing Media:
Substance is noncombustible; 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:
Absorb spill with inert material (e.g. vermiculite, sand or earth),
then place in suitable container. 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). Provide ventilation. Evacuate
unnecessary personnel. Approach spill from upwind. Remove ignition
sources since flammable hydrogen gas may be generated by reactions
with metals. Spills may produce white fumes of HF gas. Rapid dilution
of the spill with water will reduce the amount of fumes given off.
Carefully neutralize the dilute spill with lime slurry, soda ash,
limestone, caustic soda or other alkaline material.
**** SECTION 7 - HANDLING and STORAGE ****
Handling:
Wash thoroughly after handling. Remove contaminated clothing and
wash before reuse. Do not get in eyes, on skin, or on clothing. Keep
container tightly closed. Discard contaminated shoes. Use caution
when opening. Do not breathe vapor or mist. Use only with adequate
ventilation or respiratory protection. Do not put even dilute
solutions of hydrofluoric acid in glass containers. Always add the
acid to water, never the reverse. Never work alone with this
chemical.
Storage:
Store in a cool, dry, well-ventilated area away from incompatible
substances. Corrosives area. Do not store in metal or glass
containers. Inspect periodically for damage or evidence of leaks or
corrosion. Store in approved containers only. Diking of storage
containers is recommended.
**** 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 a
corrosion-resistant ventilation system. If closed handling systems
are not feasible, use local exhaust ventilation such as a fumehood
(sash should not be glass). Keep the fumehood sash as low as
possible.
Exposure Limits
CAS# 7664-39-3:
United Kingdom, WEL - TWA: 1.8 ppm TWA (as F); 1.5 mg/m3 TWA (as
United Kingdom, WEL - STEL: 3 ppm STEL (as F); 2.5 mg/m3 STEL (as
United States OSHA: 3 ppm TWA
Belgium - TWA: 1.8 ppm VLE; 1.5 mg/m3 VLE
Belgium - STEL: 3 ppm VLE; 2.5 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
CAS# 7732-18-5:
Personal Protective Equipment
Eyes:
Wear chemical splash goggles and face shield.
Skin:
Wear appropriate protective gloves to prevent skin
exposure.
Clothing:
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. Use a
NIOSH/MSHA or European Standard EN 149 approved
respirator if exposure limits are exceeded or if
irritation or other symptoms are experienced.
**** SECTION 9 - PHYSICAL AND CHEMICAL PROPERTIES ****
Physical State: Liquid
Color: colorless - fuming
Odor: strong, pungent - irritating odor - penetrating odor
pH: < 2.0
Vapor Pressure: 27 mm Hg @ 21 deg C (49%)
Viscosity: Not available.
Boiling Point: 105 deg C
Freezing/Melting Point: -35 deg C
Autoignition Temperature: Not available.
Flash Point: Not applicable.
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature: Not available.
Solubility in water: Soluble.
Specific Gravity/Density: 1.175 @ 15.5C
Molecular Formula: HF
Molecular Weight: 20.01
**** SECTION 10 - STABILITY AND REACTIVITY ****
Chemical Stability:
Stable at room temperature in closed containers under normal storage
and handling conditions. Hydrogen fluoride tends to associate by
means of hydrogen bonds to form polymers in both the liquid and
gaseous states, but this polymerization is not hazardous.
Conditions to Avoid:
Excess heat, confined spaces.
Incompatibilities with Other Materials:
Metals, strong oxidizing agents, strong bases, acetic anhydride,
alcohols, amines, Glass, concrete and other silicon-bearing
materials will yield silicon tetrafluoride gas in contact with HFA.
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..
Hazardous Decomposition Products:
Hydrogen fluoride gas.
Hazardous Polymerization: Has not been reported.
**** SECTION 11 - TOXICOLOGICAL INFORMATION ****
RTECS#:
CAS# 7664-39-3: MW7875000
CAS# 7732-18-5: ZC0110000
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.
CAS# 7732-18-5: Oral, rat: LD50 = >90 mL/kg.
Human LCLo inhalation: 50 ppm/30M.
ppm/4H.
Carcinogenicity:
Hydrofluoric acid -
Not listed by ACGIH, IARC, or NTP.
Water -
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: HYDROFLUORIC ACID
Hazard Class: 8 (6.1)
UN Number: 1790
Packing Group: II
IMO
Shipping Name: HYDROFLUORIC ACID
Hazard Class: 8 (6.1)
UN Number: 1790
Packing Group: II
RID/ADR
Shipping Name: HYDROFLUORIC ACID SOLUTION
Hazard Class: 8
UN Number: 1790
Packing group: II
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
CAS# 7732-18-5: No information available.
Canada
CAS# 7664-39-3 is listed on Canada's DSL List.
CAS# 7732-18-5 is listed on Canada's DSL List.
CAS# 7664-39-3 is listed on Canada's Ingredient Disclosure List.
CAS# 7732-18-5 is not listed on Canada's Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 7664-39-3 is listed on the TSCA inventory.
CAS# 7732-18-5 is listed on the TSCA inventory.
**** SECTION 16 - ADDITIONAL INFORMATION ****
Text for R-phrases from Section 2
MSDS Creation Date: 2/12/1999 Revision #12 Date: 11/04/2004
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.
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
|
|
|