Basic information
- Name:
Trisodium phosphate
- CAS No.:
7601-54-9
- Molecular Structure:
- Formula:
- Na3PO4
- Molecular Weight:
- 163.94 .
- Deleted CAS:
- 96337-98-3
- Synonyms:
- Phosphoricacid, trisodium salt (8CI,9CI);Antisal 4;AvGard;Dri-Tri;Laston RP;Sodiumphosphate;Sodiumtertiary phosphate;Tribasic sodium orthophosphate;Tribasic sodium phosphate;Trisodium orthophosphate;
- EINECS:
- 231-509-8
- Appearance:
- White crystalline powder
- Hazard Symbols:
C- Risk Codes:
- 34
- Safety Description:
- 26-36/37/39-45-24/25 Details
- Transport Information:
- UN 3262 8/PG 3
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Chemistry
IUPAC Name: Trisodium phosphate
Synonyms of Trisodium phosphate (CAS NO.7601-54-9): Phosphoric acid trisodium salt ; Sodium orthophosphate ; Sodium phosphate
CAS NO: 7601-54-9
Molecular Formula: Na3PO4
Molecular Weight: 163.94
Molecular Structure: .png)
EINECS: 231-509-8
H bond acceptors: 4
H bond donors: 3
Freely Rotating Bonds: 0
Polar Surface Area: 87.57 Å2
Boiling Point: 158 °C at 760 mmHg
Sensitive: Hygroscopic
Appearance: White crystalline powder
Product Categories of Trisodium phosphate (CAS NO.7601-54-9): Inorganics
SMILES: [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O
InChI: InChI=1/3Na.H3O4P/c;;;1-5(2,3)4/h;;;(H3,1,2,3,4)/q3*+1;/p-3
InChIKey: RYFMWSXOAZQYPI-DFZHHIFOAM
Std. InChI: InChI=1S/3Na.H3O4P/c;;;1-5(2,3)4/h;;;(H3,1,2,3,4)/q3*+1;/p-3
Std. InChIKey: RYFMWSXOAZQYPI-UHFFFAOYSA-K
Uses
Trisodium phosphate (CAS NO.7601-54-9) can be used as a water softening agent, cleaning agent in electroplating, color fixer in fabric dyeing and flux in enamel ware manufacturing and so on.
Production
Trisodium phosphate(7601-54-9) is made from phosphoric acid and soda ash, but caustic soda is necessary to substitute the third hydrogen of the phosphoric acid.
Toxicity Data With Reference
| Organism | Test Type | Route | Reported Dose (Normalized Dose) | Effect | Source |
|---|---|---|---|---|---|
| rabbit | LD | skin | > 300mg/kg (300mg/kg) | Acute Toxicity Data. Journal of the American College of Toxicology, Part B. Vol. 1, Pg. 47, 1990. | |
| rabbit | LDLo | intravenous | 1580mg/kg (1580mg/kg) | "Abdernalden's Handbuch der Biologischen Arbeitsmethoden." Vol. 4, Pg. 1289, 1935. |
Consensus Reports
Reported in EPA TSCA Inventory.
Safety Profile
Safety Information about Trisodium phosphate (CAS NO.7601-54-9):
Hazard Codes: 
C
Risk Statements: 34
R34:Causes burns.
Safety Statements: 26-36/37/39-45-24/25
S24/25: Avoid contact with skin and eyes.
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
S36/37/39: Wear suitable protective clothing, gloves and eye/face protection.
S45: In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.)
RIDADR: UN 3262 8/PG 3
WGK Germany: 1
RTECS: TC9490000
F: 34
Moderately toxic by intravenous route. Mutation data reported. A strong, caustic material. When heated to decomposition it emits toxic fumes of Na2O and POx. See also PHOSPHATES.
Specification
Trisodium phosphate (CAS NO.7601-54-9) should be stored at a cool, dry and well ventilated place. The package must be moistureproof and well sealed. During transportation, should avoid rains and strong sunshine.
In case of fire, please use water/sandy soil or all kinds of fire extinguishers to quench it.