P

Potassium hydrogen phthalate

IUPAC: potassium 2-carboxybenzoate

C8H5KO4 Salts CAS 877-24-7
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Quick Reference
Formula / NotationC8H5KO4
CAS Number877-24-7
Molecular Weight204.22
AppearanceSolid; Stable in air; [Merck Index] Colorless or white odorless crystals; [National Institute of Standards and Technology MSDS]
Also Known Aspotassium 2-carboxybenzoate; 877-24-7; Potassium biphthalate; Potassium acid phthalate; Hydrogen potassium phthalate; 1,2-Benzenedicarboxylic acid, monopotassium salt; GG9121M623; RefChem:867719; 212-889-4; Monopotassium phthalate
CategorySalts

What is Potassium hydrogen phthalate?

Potassium hydrogen phthalate (C8H5KO4) is a salt that appears as Solid; Stable in air; [Merck Index] Colorless or white odorless crystals; [National Institute of Standards and Technology MSDS]. It has a molecular weight of 204.22 g/mol. Its IUPAC name is potassium 2-carboxybenzoate.

Formula & Notation

C8H5KO4

IUPAC Name: potassium 2-carboxybenzoate

Other Names / Synonyms: potassium 2-carboxybenzoate; 877-24-7; Potassium biphthalate; Potassium acid phthalate; Hydrogen potassium phthalate; 1,2-Benzenedicarboxylic acid, monopotassium salt; GG9121M623; RefChem:867719; 212-889-4; Monopotassium phthalate

Properties & Characteristics

Appearance: Solid; Stable in air; [Merck Index] Colorless or white odorless crystals; [National Institute of Standards and Technology MSDS]. Molecular formula: C8H5KO4. Molecular weight: 204.22 g/mol.

Physical Data

PropertyValue
Molecular Weight204.22
AppearanceSolid; Stable in air; [Merck Index] Colorless or white odorless crystals; [National Institute of Standards and Technology MSDS]

Uses & Applications

Used in food preservation, water treatment, chemical synthesis, fertilizers, and pharmaceutical applications.

Safety Information

Irritant or toxic depending on specific salt. Some salts are oxidising agents or toxic to aquatic environments. Consult SDS before use.

Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.

Key Facts

Term Potassium hydrogen phthalate
Formula C8H5KO4
CAS Number 877-24-7
Molecular Weight 204.22
Category Salts
Synonyms potassium 2-carboxybenzoate; 877-24-7; Potassium biphthalate; Potassium acid phthalate; Hydrogen potassium phthalate; 1,2-Benzenedicarboxylic acid, monopotassium salt; GG9121M623; RefChem:867719; 212-889-4; Monopotassium phthalate

Frequently Asked Questions

Potassium hydrogen phthalate (C8H5KO4) is a salt that appears as Solid; Stable in air; [Merck Index] Colorless or white odorless crystals; [National Institute of Standards and Technology MSDS]. It has a molecular weight of 204.22 g/mol. Its IUPAC name is potassium 2-carboxybenzoate.

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Editorial standards: Chemical data is sourced from peer-reviewed literature, CAS Registry, NIST WebBook, and PubChem. Safety information reflects guidance from OSHA, ECHA, and IAEA. For educational purposes only — always consult official SDS documentation and qualified professionals before handling chemicals.