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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Reference substances

Reference substances

Currently viewing:
IUPAC name:
trisodium phosphate

Inventory

EC number:
231-509-8
EC name:
Trisodium orthophosphate
CAS number:
7601-54-9
CAS number:
7601-54-9
Synonyms
Names:
Phosphoric acid trisodium salt
Phosphoric acid, trisodium salt
Sodium phosphate
Sodium phosphate, anhydrous
TSP
Tribasic sodium phosphate
Identifier:
CAS number
10101-89-0
Identifier:
CAS number
10361-89-4
Identifier:
CAS number
15819-50-8
Identifier:
CAS number
60593-58-0
Identifier:
CAS number
60593-59-1
Identifier:
IUPAC name
trisodium phosphate decahydrate
Identifier:
IUPAC name
trisodium phosphate dodecahydrate
Identifier:
IUPAC name
trisodium;phosphate
Identifier:
other: Molecular formula
H12Na3O10P
Identifier:
other: Molecular formula
H16Na3O12P
Identifier:
other: Molecular formula
H20Na3O14P
Identifier:
other: Molecular formula
H24Na3O16P
Identifier:
other: InChl
InChI=1/3Na.H3O4P.10H2O/c;;;1-5(2,3)4;;;;;;;;;;/h;;;(H3,1,2,3,4);10*1H2/q3*+1;;;;;;;;;;;/p-3
Identifier:
other: InChl
InChI=1/3Na.H3O4P.12H2O/c;;;1-5(2,3)4;;;;;;;;;;;;/h;;;(H3,1,2,3,4);12*1H2/q3*+1;;;;;;;;;;;;;/p-3
Identifier:
other: InChl
InChI=1/3Na.H3O4P.6H2O/c;;;1-5(2,3)4;;;;;;/h;;;(H3,1,2,3,4);6*1H2/q3*+1;;;;;;;/p-3
Identifier:
other: InChl
InChI=1/3Na.H3O4P.8H2O/c;;;1-5(2,3)4;;;;;;;;/h;;;(H3,1,2,3,4);8*1H2/q3*+1;;;;;;;;;/p-3
Identifier:
other: InChl
InChI=1S/3Na.H3O4P/c;;;1-5(2,3)4/h;;;(H3,1,2,3,4)/q3*+1;/p-3
Identifier:
other: Molecular formula
Na3O4P
Identifier:
other: SMILES notation
O.O.O.O.[Na+].[Na+].[Na+].O.O.O.O.[O-]P([O-])([O-])=O
Identifier:
other: SMILES notation
[Na+].[Na+].[Na+].[O-]P([O-])([O-])=O
Identifier:
other: SMILES notation
[Na+].[Na+].[Na+].[O-]P([O-])([O-])=O.O.O.O.O.O.O
Identifier:
other: SMILES notation
[Na+].[Na+].[Na+].[O-]P([O-])([O-])=O.O.O.O.O.O.O.O.O.O.O
Identifier:
other: SMILES notation
[Na+].[Na+].[Na+].[O-]P([O-])([O-])=O.O.O.O.O.O.O.O.O.O.O.O.O
Identifier:
other: SMILES notation
[O-]P(=O)([O-])[O-].[Na+].[Na+].[Na+]
trisodium phosphate

Molecular and structural information

Molecular formula:
H3O4P.3Na
Molecular weight:
163.941
SMILES notation:
[Na+].[Na+].[Na+].[O-]P(=O)([O-])[O-]
InChl:
InChI=1/3Na.H3O4P/c;;;1-5(2,3)4/h;;;(H3,1,2,3,4)/q3*+1;/p-3
Structural formula:
Chemical structure

Related substances

open allclose all
Identifier:
CAS number
Identity:
10101-89-0
Identifier:
common name
Identity:
trisodium phosphate dodecahydrate
Identifier:
CAS number
Identity:
7601-54-9, 10101-89-0, 56802-99-4
Identifier:
CAS number
Identity:
15819-50-8
Identifier:
CAS number
Identity:
10361-89-4
Identifier:
CAS number
Identity:
60593-59-1
Identifier:
CAS number
Identity:
60593-58-0