Sodium hydrogen fluoride

  • Sodium bifluoride
  • Sodium hydrogen difluoride
Formula
NaHF2
Structure
Description
White crystalline solid.
Uses
Tin plate production, neutralizer in laundry rinsing operations, preservative for zoological & anatomical specimens, etching glass, antiseptic.

Registry Numbers and Inventories.
CAS
1333-83-1
EC (EINECS/ELINCS)
215-608-3
EC Index Number
009-007-00-3
EC Class
Toxic; Corrosive
RTECS
WB0350010
RTECS class
Other
UN (DOT)
2439
Merck
12,8727
Beilstein/Gmelin
12831 (G)
EPA OPP
75201
Swiss Giftliste 1
G-2575
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
F2HNa
Formula mass
61.99
Vapor density (air=1)
2.14
Density
2.12 g/cm3

Hazards and Protection.
Storage
Keep containers tightly closed in a well ventilated area away from food products. Keep away from heat and water.
Handling
Containers of this material may be hazardous when emptied. Since emptied containers retain product residues (vapor, liquid, and/or solid), all hazard precautions given in the data sheet must be observed. Addition to water releases heat which can result in violent boiling and spattering. Always add slowly and in small amounts. Never use hot water.
Protection
Wear appropriate protective gloves, clothing and goggles.
Respirators
Either a respirator whose canister is specifically approved for this material, or a self-contained breathing apparatus.
Small spills/leaks
Keep material out of water sources and sewers. Build dikes to contain flow as necessary. Neutralize spilled material with crushed limestone, soda ash, or lime. Land spill: Dig a pit, pond, lagoon, holding area to contain liquid or solid material. Cover solids with a plastic sheet to prevent dissolving in rain or fire fighting water. Water spill: Neutralize with agricultural lime (CaO), crushed limestone (CaCO3), or sodium bicarbonate (NaHCO3). Use mechanical dredges or lifts to remove immobilized masses of pollutants and precipitates. Adjust pH to neutral (pH=7).
Stability
Stable.
Incompatibilities
Reacts as acid to neutralize bases.
Decomposition
Hydrogen fluoride.

Fire.
Fire fighting
Extinguish fire using agent suitable for type of surrounding fire. (Material itself does not burn or burns with difficulty.) Use water in flooding quantities as fog. Cool all affected containers with flooding quantities of water. Apply water from as far a distance as possible.
Fire potential
Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes.
Hazards
Some are oxidizers and may ignite combustibles (wood, paper, oil, clothing, etc.). Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated.
Combustion products
Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes.

Health.
Poison_Class
2
Exposure effects
   Ingestion
See Inhalation.
   Inhalation
Dyspnea, bronchospasm (with abnormal pfts and hypoxia), chemical pneumonitis, pulmonary edema (can be hemorrhagic), tracheobronchitis, upper airway obstruction, chemical burns (larynx, trachea, bronchi) and ards may occur following inhalation.
   Skin
Contact with molten substance may cause severe burns to skin and eyes. See Inhalation.
   Eyes
See Inhalation.

First aid
 
   Ingestion
Seek medical assistance.
   Inhalation
Move victim to fresh air. Apply artificial respiration if victim is not breathing. Do not use mouth-to-mouth method if victim ingested or inhaled the substance; induce artificial respiration with the aid of a pocket mask equipped with a one-way valve or other proper respiratory medical device. Administer oxygen if breathing is difficult.
   Skin
Wash with soap and water.
   Eyes
Wash with running water or weak boric acid solution followed by water.

Transport.
UN number
2439
Response guide
Hazard class
8
Packing Group
II
 
USCG CHRIS Code
SBF
 
Std. Transport #
4932355