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Chemical Datasheet
AMMONIUM BIFLUORIDE, SOLID |
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Chemical Identifiers
CAS Number |
UN/NA Number |
DOT Hazard Label |
USCG CHRIS Code |
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NIOSH Pocket Guide |
International Chem Safety Card |
none
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none
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NFPA 704
data unavailable
General Description
A white crystalline solid. Soluble in water. Corrosive to tissue. Used to sterilize food processing equipment, in chemical analysis, for electroplating and for many other uses.
Hazards
Reactivity Alerts
none
Air & Water Reactions
Dissolves in water and forms a weak solution of hydrofluoric acid.
Fire Hazard
Special Hazards of Combustion Products: Toxic ammonia, hydrogen fluoride, hydrofluoric acid, and hydrogen gases may form in fire. (USCG, 1999)
Health Hazard
Inhalation of dust may cause irritation of the respiratory system. Ingestion causes irritation of mouth and stomach, vomiting, abdominal pain, convulsions, collapse, acute toxic nephritis. Contact with dust irritates eyes and may cause chemical burns or rash on skin. High concs. of fluorine in the urine have been reported following skin contact. (USCG, 1999)
Reactivity Profile
AMMONIUM BIFLUORIDE reacts violently with bases. In presence of moisture will corrode glass, cement, and most metals. Flammable hydrogen gas may collect in enclosed spaces. Do not use steel, nickel, or aluminum containers (USCG, 1999).
Belongs to the Following Reactive Group(s)
- Salts, Acidic
- Fluoride Salts, Soluble
Potentially Incompatible Absorbents
Use caution: Liquids with this reactive group classification have been
known to react with the
absorbents
listed below.
- Mineral-Based & Clay-Based Absorbents
- Sand
- Dirt/Earth
Response Recommendations
Isolation and Evacuation
Excerpt from 154
[Substances - Toxic and/or Corrosive (Non-Combustible)]:
IMMEDIATE PRECAUTIONARY MEASURE: Isolate spill or leak area in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters (75 feet) for solids.
SPILL: Increase the immediate precautionary measure distance, in the downwind direction, as necessary.
FIRE: If tank, rail car or tank truck is involved in a fire, ISOLATE for 800 meters (1/2 mile) in all directions; also, consider initial evacuation for 800 meters (1/2 mile) in all directions. (ERG, 2020)
Firefighting
Excerpt from 154
[Substances - Toxic and/or Corrosive (Non-Combustible)]:
SMALL FIRE: Dry chemical, CO2 or water spray.
LARGE FIRE: Dry chemical, CO2, alcohol-resistant foam or water spray. If it can be done safely, move undamaged containers away from the area around the fire. Dike runoff from fire control for later disposal.
FIRE INVOLVING TANKS OR CAR/TRAILER LOADS: Fight fire from maximum distance or use unmanned master stream devices or monitor nozzles. Do not get water inside containers. Cool containers with flooding quantities of water until well after fire is out. Withdraw immediately in case of rising sound from venting safety devices or discoloration of tank. ALWAYS stay away from tanks engulfed in fire. (ERG, 2020)
Non-Fire Response
Excerpt from 154
[Substances - Toxic and/or Corrosive (Non-Combustible)]:
ELIMINATE all ignition sources (no smoking, flares, sparks or flames) from immediate area. Do not touch damaged containers or spilled material unless wearing appropriate protective clothing. Stop leak if you can do it without risk. Prevent entry into waterways, sewers, basements or confined areas. Absorb or cover with dry earth, sand or other non-combustible material and transfer to containers. DO NOT GET WATER INSIDE CONTAINERS. (ERG, 2020)
Protective Clothing
NIOSH approved respirator; rubber gloves; safety goggles; chemical resistant clothing. (USCG, 1999)
DuPont Tychem® Suit Fabrics
Normalized Breakthrough Times (in Minutes)
Chemical |
CAS Number |
State |
QS |
QC |
SL |
C3 |
TF |
TP |
RC |
TK |
RF |
Ammonium bifluoride (sat) |
1341-49-7 |
Liquid |
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>480 |
>480 |
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Ammonium hydrogendifluoride (sat) |
1341-49-7 |
Liquid |
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>480 |
>480 |
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Special Warning from DuPont: Tychem® and Tyvek® fabrics should not be
used around heat, flames, sparks or in potentially flammable or
explosive environments. Only...
(DuPont, 2023)
First Aid
Begin first aid as quickly as possible.
INHALATION: remove victim to fresh air. If breathing is difficult, give oxygen. If not breathing, give artificial respiration.
INGESTION: perform gastric lavage with lime water or 1% calcium chloride solution; support respiration; call a physician.
EYES: flush with water for at least 15 min.; consult physician.
SKIN: flush with water; treat burns.
OTHER: remove all contaminated clothing in the shower at once. (USCG, 1999)
Physical Properties
Flash Point: data unavailable
Lower Explosive Limit (LEL): data unavailable
Upper Explosive Limit (UEL): data unavailable
Autoignition Temperature: data unavailable
Melting Point:
258°F
(USCG, 1999)
Vapor Pressure: data unavailable
Vapor Density (Relative to Air): data unavailable
Specific Gravity:
1.5
at 68°F
(USCG, 1999)
- Denser than water; will sink
Boiling Point:
463.1°F
at 760 mmHg
(Decomposes at 446°F)
(USCG, 1999)
Molecular Weight:
57.04
(USCG, 1999)
Water Solubility: data unavailable
Ionization Energy/Potential: data unavailable
IDLH: data unavailable
AEGLs (Acute Exposure Guideline Levels)
No AEGL information available.
ERPGs (Emergency Response Planning Guidelines)
No ERPG information available.
PACs (Protective Action Criteria)
Chemical |
PAC-1 |
PAC-2 |
PAC-3 |
Ammonium hydrogen fluoride; (Ammonium bifluoride) (1341-49-7)
|
11 mg/m3 |
130 mg/m3 |
750 mg/m3 |
(DOE, 2018)
Regulatory Information
EPA Consolidated List of Lists
Regulatory Name |
CAS Number/ 313 Category Code |
EPCRA 302 EHS TPQ |
EPCRA 304 EHS RQ |
CERCLA RQ |
EPCRA 313 TRI |
RCRA Code |
CAA 112(r) RMP TQ |
Ammonium bifluoride |
1341-49-7 |
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100 pounds |
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(EPA List of Lists, 2022)
CISA Chemical Facility Anti-Terrorism Standards (CFATS)
No regulatory information available.
OSHA Process Safety Management (PSM) Standard List
No regulatory information available.
Alternate Chemical Names
- ACID AMMONIUM FLUORIDE
- AMMONIUM ACID FLUORIDE
- AMMONIUM BIFLUORIDE
- AMMONIUM BIFLUORIDE (NH4HF2)
- AMMONIUM BIFLUORIDE (NH5F2)
- AMMONIUM BIFLUORIDE, SOLID
- AMMONIUM DIFLUORIDE
- AMMONIUM DIFLUORIDE (NH4HF2)
- AMMONIUM FLUORIDE (NH4HF2)
- AMMONIUM FLUORIDE COMPOUND WITH HYDROGEN FLUORIDE (1:1)
- AMMONIUM FLUORIDE HYDROFLUORIDE
- AMMONIUM HYDROFLUORIDE (NH4HF2)
- AMMONIUM HYDROFLUORIDE (NH5F2)
- AMMONIUM HYDROGEN BIFLUORIDE
- AMMONIUM HYDROGEN DIFLUORIDE
- AMMONIUM HYDROGEN DIFLUORIDE (NH4(HF2))
- AMMONIUM HYDROGEN FLUORIDE
- AMMONIUM HYDROGEN FLUORIDE ((NH4)(HF2))
- AMMONIUM HYDROGEN FLUORIDE (NH4HF2)
- AMMONIUM HYDROGEN FLUORIDE, SOLID
- AMMONIUM HYDROGEN FLUORIDE, [SOLID]
- AMMONIUM HYDROGENDIFLUORIDE, SOLID
- AMMONIUM MONOHYDROGEN DIFLUORIDE
- FLAMMON
- HYDROFLUORIC ACID COMPOUND WITH AMMONIUM FLUORIDE (NH4)F (1:1)