Diammonium hydrogen phosphate
Ammonium phosphate secondary
(NH4)2HPO4
Molecular mass: 132.1
ICSC # 0217
CAS # 7783-28-0
|
|
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: all extinguishing agents allowed.
|
|
Explosion
|
|
|
|
|
|
|
Exposure
|
|
|
|
|
•Inhalation
|
|
Local exhaust.
|
Fresh air, rest.
|
|
•Skin
|
|
Protective gloves.
|
Rinse skin with plenty of water or shower.
|
|
•Eyes
|
Redness.
Pain.
|
Safety spectacles.
|
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
|
|
•Ingestion
|
|
Do not eat, drink, or smoke during work.
|
Rinse mouth.
Refer for medical attention.
|
|
Spillage Disposal
|
Storage
|
Packaging & Labelling
|
Sweep spilled substance into covered containers; if appropriate, moisten first to prevent dusting.
Wash away remainder with plenty of water.
Personal protection: P2 filter respirator for harmful particles.
|
Separated from
strong oxidants,
strong bases,
strong acids.
Keep in a well-ventilated room.
|
|
|
|
|
Important Data
|
Physical State; Appearance:
ODOURLESS
WHITE
CRYSTALS
OR POWDER.
Physical Dangers:
Chemical Dangers:
The substance decomposes
on heating above 100°C,
on contact with strong bases,
producing
toxic and corrosive fumes
including
ammonia
,
nitrogen oxides
and
phosphorus oxides
.
The solution in water is a weak base.
Reacts vigorously
with
strong acids
and
strong oxidants
.
Gradually gives off ammonia on exposure to air.
Occupational Exposure Limits:
TLV not established.
|
Routes of Exposure:
The substance can be absorbed into the body
by inhalation of its aerosol.
Inhalation Risk:
Evaporation at 20°C is negligible; a nuisance-causing concentration of airborne particles can, however, be reached quickly when dispersed, especially, if powdered.
Effects of Short-Term Exposure:
The substance
irritates
the eyes
.
Effects of Long-Term or Repeated Exposure:
|
|
Physical
Properties
|
Decomposes below melting point at 100°C
Relative density (water = 1): 1.6
|
Solubility in water, g/100 ml at 10°C: 57.5
|
|
Environmental
Data
|
|
|
N O T E S
|
|
|
|
ADDITIONAL INFORMATION
|
|
|
|
ICSC: 0217
|
AMMONIUM PHOSPHATE DIBASIC
|
|
(C) IPCS, CEC, 1994
|
|
|
IMPORTANT LEGAL NOTICE:
Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH,
the CEC or the IPCS is responsible for the use which might be made of this
information. This card contains the collective views of the IPCS Peer Review Committee and may
not reflect in all cases all the detailed requirements included in national legislation
on the subject. The user should verify compliance of the cards with the relevant legislation
in the country of use.
The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and NIOSH IDLH values.
|
|
|