Sodium phosphate, tribasic
Trisodium orthophosphate
Na3PO4
Molecular mass: 163.9
ICSC # 1178
CAS # 7601-54-9
RTECS # TC9490000
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Types of Hazard/ Exposure
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Acute Hazards/ Symptoms
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Prevention
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First Aid/
Fire Fighting
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FIRE
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Not combustible.
Gives off irritating or toxic fumes (or gases) in a fire.
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In case of fire in the surroundings: all extinguishing agents allowed.
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Explosion
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Exposure
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AVOID ALL CONTACT!
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•Inhalation
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Burning sensation.
Cough.
Shortness of breath.
Sore throat.
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Local exhaust or breathing protection.
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Fresh air, rest.
Half-upright position.
Refer for medical attention.
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•Skin
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Skin burns.
Pain.
Blisters.
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Protective clothing.
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Rinse with plenty of water, do NOT remove clothes.
Refer for medical attention.
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•Eyes
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Redness.
Pain.
Severe deep burns.
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Face shield
or eye protection in combination with breathing protection.
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First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
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•Ingestion
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Abdominal pain.
Burning sensation.
Shock or collapse.
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Do not eat, drink, or smoke during work.
Wash hands before eating.
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Rinse mouth.
Do NOT induce vomiting.
Give plenty of water to drink.
Rest.
Refer for medical attention.
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Spillage Disposal
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Storage
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Packaging & Labelling
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Sweep spilled substance into containers; if appropriate, moisten first to prevent dusting.
Carefully collect remainder,
then remove to safe place
(extra personal protection: complete protective clothing including self-contained breathing apparatus).
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Separated from
strong acids.
Dry.
Well closed.
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Important Data
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Physical State; Appearance:
COLOURLESS TO WHITE CRYSTALS.
Physical Dangers:
Chemical Dangers:
The substance decomposes
on heating
producing toxic and corrosive fumes including phosphorous oxides.
The solution in water is a strong base, it reacts violently with acid and is corrosive.
Attacks many metals in presence of water.
Occupational Exposure Limits:
TLV not established.
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Routes of Exposure:
The substance can be absorbed into the body
by inhalation,
through the skin and
by ingestion.
Inhalation Risk:
Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly when dispersed.
Effects of Short-Term Exposure:
The substance
is corrosive to
the eyes,
the skin and
the respiratory tract.
Corrosive on ingestion.
Inhalation of dust may cause lung oedema (see Notes).
Effects of Long-Term or Repeated Exposure:
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Physical
Properties
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Melting point (decomposes): 75°C
Relative density (water = 1): 2.5
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Solubility in water, g/100 ml: 8.8
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Environmental
Data
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N O T E S
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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 spray, by a doctor or a person authorized by him/her, should be considered.
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ADDITIONAL INFORMATION
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ICSC: 1178
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TRISODIUM PHOSPHATE (ANHYDROUS)
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(C) IPCS, CEC, 1994
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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.
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