International Chemical Safety Cards

AMMONIUM PHOSPHATE DIBASIC

ICSC: 0217

Diammonium hydrogen phosphate
Ammonium phosphate secondary
(NH₄)₂HPO₄
Molecular mass: 132.1
ICSC # 0217
CAS # 7783-28-0
RTECS #
March 23, 1998 Peer reviewed

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.

R:
S:

SEE IMPORTANT INFORMATION ON BACK

ICSC: 0217

Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities (C) IPCS CEC 1994. No modifications to the International version have been made except to add the OSHA PELs, NIOSH RELs and NIOSH IDLH values.

International Chemical Safety Cards

AMMONIUM PHOSPHATE DIBASIC

ICSC: 0217

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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.