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FLUOROBORIC ACID (aqueous solution ≥ 25 %)
ICSC: 1040
Peer-Review Status: 09 06 2011 Validated
Borofluoric acid
Fluoboric acid
Hydrogen tetrafluoroborate
Hydrofluoboric acid 
CAS #: 16872-11-0 UN #: 1775
EC #: 009-010-00-X
EINECS #: 240-898-3
    Formula: HBF4
Molecular mass: 87.8

TYPES OF
HAZARD /
EXPOSURE
ACUTE HAZARDS / SYMPTOMS      PREVENTION      FIRST AID / FIRE FIGHTING
FIRE Not combustible. Gives off irritating or toxic fumes (or gases) in a fire.    In case of fire in the surroundings, use appropriate extinguishing media. 
EXPLOSION      
 
EXPOSURE   AVOID ALL CONTACT!  IN ALL CASES CONSULT A DOCTOR! 
Inhalation Sore throat. Cough. Burning sensation. Shortness of breath. Laboured breathing.  Use ventilation, local exhaust or breathing protection.  Fresh air, rest. Half-upright position. Refer immediately for medical attention. 
Skin Pain. Blisters.  Protective gloves. Protective clothing.  Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer immediately for medical attention. Apply calcium gluconate to the burn areas. 
Eyes Redness. Pain. Severe deep burns.  Wear face shield or eye protection in combination with breathing protection.  First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention. 
Ingestion Burns in mouth and throat. Sore throat. Burning sensation. Abdominal pain. Diarrhoea. Vomiting. Shock or collapse.  Do not eat, drink, or smoke during work.  Rinse mouth. Do NOT induce vomiting. Refer immediately for medical attention. 

SPILLAGE DISPOSAL
PACKAGING & LABELLING
Personal protection: complete protective clothing including self-contained breathing apparatus. Consult an expert! Collect leaking liquid in sealable containers. Absorb remaining liquid in sand or inert absorbent. Then store and dispose of according to local regulations.  Unbreakable packaging.
Put breakable packaging into closed unbreakable container.
Do not transport with food and feedstuffs. 
EC Classification
Symbol: C; R: 34; S: (1/2)-26-27-45 
UN Classification
UN Hazard Class: 8; UN Pack Group: II 
GHS Classification
Signal: Danger
May be corrosive to metals
Causes severe skin burns and eye damage
Causes damage to respiratory system 
corrcancer;health haz

EMERGENCY RESPONSE SAFE STORAGE
  Separated from strong bases, metals and food and feedstuffs. Well closed. Ventilation along the floor. Store only in original container. Do NOT store or transport in containers made from metal or glass. Store in an area without drain or sewer access. 

IMPORTANT DATA
Physical State; Appearance
COLOURLESS LIQUID. 

Physical dangers
 

Chemical dangers
Decomposes on heating. This produces toxic and corrosive fumes including hydrogen fluoride and fluorine compounds. The solution in water is a strong acid. It reacts with bases and is corrosive. Attacks many metals. This produces flammable/explosive gas (hydrogen - see ICSC 0001). 

Occupational exposure limits
TLV (as F): 2.5mg/m³ as TWA; A4 (not classifiable as a human carcinogen); (ACGIH 2010).
MAK (inhalable fraction): 1 mg/m³; Peak limitation category: II(4); Pregnancy risk group: C; Skin absorption (H); (DFG 2008). 

Routes of exposure
Serious local effects and systemic effects by all routes of exposure. 

Inhalation risk
No indication can be given about the rate at which a harmful concentration of this substance in the air is reached when dispersed. 

Effects of short-term exposure
Corrosive. Inhalation may cause severe swelling of the throat. This may result in asphyxia. Inhalation may cause lung oedema, but only after initial corrosive effects on eyes and/or airways have become manifest. Exposure at high levels could cause severe lung damage. See Notes. Medical observation is indicated. 

Effects of long-term or repeated exposure
 


PHYSICAL PROPERTIES ENVIRONMENTAL DATA
Relative density (water = 1): 1.4 (50% solution)  This substance may be hazardous to the environment. Special attention should be given to fish. 

NOTES
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.
Immediate administration of an appropriate inhalation therapy by a doctor or a person authorized by him/her, should be considered.
Specific treatment is necessary in case of poisoning with this substance; the appropriate means with instructions must be available.
Also consult publication ICSC0283 (Hydrogen Fluoride). 

ADDITIONAL INFORMATION
 

IPCS
International
Programme on
Chemical Safety
WHO ILO EC Prepared in the context of cooperation between the International Programme on Chemical Safety and the European Commission
© IPCS 2004-2012
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    See Also:
       Toxicological Abbreviations