|HYDROFLUORIC ACID (70% AQUEOUS SOLUTION)||ICSC: 1777 (April 2017)|
| CAS #: 7664-39-3
| UN #: 1790
|EC Number: 231-634-8
|ACUTE HAZARDS||PREVENTION||FIRE FIGHTING|
|FIRE & EXPLOSION||Not combustible. Many reactions may cause fire or explosion. Risk of fire and explosion on contact with incompatible substances. See Chemical Dangers.||NO contact with incompatible substances. See Chemical Dangers.||In case of fire in the surroundings, use appropriate extinguishing media. In case of fire: keep drums, etc., cool by spraying with water. Combat fire from a sheltered position.|
|AVOID ALL CONTACT! IN ALL CASES CONSULT A DOCTOR!|
|Inhalation||Cough. Sore throat. Burning sensation. Shortness of breath. Laboured breathing. Nausea. Vomiting. Symptoms may be delayed. See Notes.||Use ventilation, local exhaust or breathing protection.||Fresh air, rest. Half-upright position. Artificial respiration may be needed. Refer immediately for medical attention.|
|Skin||MAY BE ABSORBED! Redness. Pain. Serious skin burns. Blisters. See Inhalation.||Protective gloves. Protective clothing. Apron.||Wear protective gloves when administering first aid. Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer immediately for medical attention.|
|Eyes||Redness. Pain. Severe burns.||Wear face shield or eye protection in combination with breathing protection.||Rinse with plenty of water (remove contact lenses if easily possible). Refer immediately for medical attention.|
|Ingestion||Burns in mouth and throat. Burning sensation. Abdominal pain. Vomiting. Shock or collapse.||Do not eat, drink, or smoke during work. Wash hands before eating.||Rinse mouth. Give nothing to drink. Do NOT induce vomiting. Refer immediately for medical attention.|
|SPILLAGE DISPOSAL||CLASSIFICATION & LABELLING|
|Evacuate danger area! Consult an expert! Personal protection: chemical protection suit including self-contained breathing apparatus. Do NOT let this chemical enter the environment. Ventilation. Cover the spilled material with dry sand or dry earth. Collect the spilled substance into containers. Then store and dispose of according to local regulations.||
According to UN GHS Criteria
Fatal if swallowed or if inhaled
Harmful in contact with skin
Causes severe skin burns and eye damage
May cause respiratory irritation
Causes damage to bones through prolonged or repeated exposure
Harmful to aquatic life
|Store only in original container. Separated from food and feedstuffs and incompatible materials. See Chemical Dangers. Cool. Ventilation along the floor. Store in an area without drain or sewer access.|
|Put breakable packaging into closed unbreakable container.
Do not transport with food and feedstuffs.
|HYDROFLUORIC ACID (70% AQUEOUS SOLUTION)||ICSC: 1777|
|PHYSICAL & CHEMICAL INFORMATION|
Physical State; Appearance
|EXPOSURE & HEALTH EFFECTS|
Routes of exposure
Effects of short-term exposure
Effects of long-term or repeated exposure
|OCCUPATIONAL EXPOSURE LIMITS|
TLV: (as F): 0.5 ppm as TWA; 2 ppm as STEL; (skin); BEI issued.
MAK: (as F): 0.83 mg/m3, 1 ppm; peak limitation category: I(2); pregnancy risk group: C.
EU-OEL: 1.5 mg/m3 as TWA; 2.5 mg/m3 as STEL
|The substance is harmful to aquatic organisms.|
|The occupational exposure limit value should not be exceeded during any part of the working exposure.
The symptoms of lung oedema often do not become manifest until a few hours have passed and they are aggravated by physical effort. Rest and medical observation are therefore essential.
Specific treatment is necessary in case of poisoning with this substance; the appropriate means with instructions must be available.
Isolate contaminated clothing by sealing in a bag or other container.
UN number for hydrogen fluoride as a gas is 1052, hazard class 8, subsidiary hazard 6.1, packing group 1.
The partial vapour pressure is 20 kPa at 25 °C.
Symbol: T+, C; R: 26/27/28-35; S: (1/2)-7/9-26-36/37/39-45
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