H2Na2O7P2
221.94 g/mol
Food AdditiveWarning
Sodium acid pyrophosphate
CAS7758-16-9EC231-835-0
Category
Food Additive
Compound Class
Inorganic Salt
Primary Use
Baking powder acidulant and food additive
Sodium acid pyrophosphate is a chemical compound used as a leavening acidulant in baking powders and as a food additive. It also finds application in industrial processes such as electroplating, metal cleaning, and petroleum production.
Baking powder acidulantFood additiveElectroplating
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
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Related Compounds
ReferenceSame Category
Monocalcium phosphate
CAS7758-23-8
Leavening agent and mineral supplement
ReferenceSame Category
Tricalcium phosphate
CAS7758-87-4
food additive and fertilizer
ReferenceSame Category
Vinegar
CAS77671-22-8
active component of vinegar
ReferenceSame Category
Potassium hydrogen sulfite
CAS7773-03-7
Food preservative and antimicrobial agent
Referencestereoisomer of
Iron(III) pyrophosphate
CAS10058-44-3
Industrial and pharmaceutical raw material
Referencestereoisomer of
Potassium pyrophosphate
CAS7320-34-5
Chelating agent
Referencestereoisomer of
Sodium pyrophosphate
CAS7722-88-5
Detergent builder and food additive
Safety Reference
Warning
H302Harmful if swallowed
H319Causes serious eye irritation
Customs Tariff Classification
The international HS code for Sodium acid pyrophosphate (CAS 7758-16-9) is 2835.39.
HS code (international, 6-digit)
2835.39
EU CN code (8-digit)
2835 39 00
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
disodium;[hydroxy(oxido)phosphoryl] hydrogen phosphate
InChIKey
GYQBBRRVRKFJRG-UHFFFAOYSA-L
SMILES
OP(=O)([O-])OP(=O)(O)[O-].[Na+].[Na+]
Synonyms (19)
- SAPP
- DISODIUM PYROPHOSPHATE
- Dinatriumpyrophosphat
- Disodium acid pyrophosphate
- Disodiumpytophosphate
- Glassy sodium phosphate
- Grahamsches salz
- Sodium acid pyrophosphate
- Sodium diphosphate dibasic
- Sodium pyrophosphate, dibasic
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