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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Inventory

EC number:
231-449-2
EC name:
Sodium dihydrogenorthophosphate
CAS number:
7558-80-7
CAS number:
7558-80-7
Synonyms
Names:
Dihydrogen monosodium phosphate
Monobasic sodium phosphate
Monosodium dihydrogen monophosphate
Monosodium dihydrogen orthophosphate
Monosodium hydrogen phosphate
Monosodium phosphate
Phosphoric acid, monosodium salt
Phosphoric acid, monosodium salt Phosphoric acid, monosodium salt Monosodium phosphate
Sodium biphosphate anhydrous
Sodium phosphate
Sodium phosphate, monobasic
Identifier:
CAS number
10049-21-5
Identifier:
CAS number
13472-35-0
Identifier:
IUPAC name
Phosphoric acid, monosodium salt, monohydrate
Identifier:
IUPAC name
Sodium dihydrogen phosphate
Identifier:
IUPAC name
Sodium dihydrogenorthophosphate
Identifier:
IUPAC name
phosphoric acid; sodium; hydrate
Identifier:
IUPAC name
sodium dihydrogen phosphate dihydrate
Identifier:
IUPAC name
sodium dihydrogenorthophosphate
Identifier:
other: InChl
AJPJDKMHJJGVTQ-UHFFFAOYSA-M
Identifier:
other: Molecular formula
H2NaO4P
Identifier:
other: Molecular formula
H2O4P.Na
Identifier:
other: Molecular formula
H3O4P.Na
Identifier:
other: Molecular formula
H4NaO5P
Identifier:
other: Molecular formula
H6NaO6P
Identifier:
other: InChl
InChI=1/Na.H3O4P.2H2O/c;1-5(2,3)4;;/h;(H3,1,2,3,4);2*1H2/q+1;;;/p-1
Identifier:
other: InChl
InChI=1/Na.H3O4P.H2O/c;1-5(2,3)4;/h;(H3,1,2,3,4);1H2/q+1;;/p-1
Identifier:
other: InChl
InChI=1S/Na.H3O4P/c;1-5(2,3)4/h;(H3,1,2,3,4)/q+1;/p-1
Identifier:
other: Molecular formula
NaH2PO4
Identifier:
other: Molecular formula
NaH2PO4 · H20
Identifier:
other: SMILES notation
OP(=O)(O)[O-].[Na+]
Identifier:
other: SMILES notation
[Na+].OP(=O)(O)[O-]
Identifier:
other: SMILES notation
[Na+].O[P](=O)[OH]2
Identifier:
other: SMILES notation
[Na+].[O-]P(=O)(O)O
Identifier:
other: SMILES notation
[Na+].[O-]P(=O)(O)O.O
Identifier:
other: SMILES notation
[Na+].[O-]P(=O)(O)O.O.O
sodium dihydrogen phosphate

Molecular and structural information

Molecular formula:
H3O4P.Na
Molecular weight:
119.977
SMILES notation:
OP(=O)(O)[O-].[Na+]
InChl:
InChI=1/Na.H3O4P/c;1-5(2,3)4/h;(H3,1,2,3,4)/q+1;/p-1
Structural formula:
Chemical structure

Related substances

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Identifier:
CAS number
Identity:
10049-21-5
Identifier:
CAS number
Identity:
13472-35-0