Potassium hydrogen phthalate, GR 99%+

Name: Potassium hydrogen phthalate, GR 99%+
Brand: Vaqora Chemicals
SKU: VQ-014029

About Potassium hydrogen phthalate, GR 99%+

Potassium hydrogen phthalate (CAS 877-24-7) is an alkali metal compound offered by Vaqora Chemicals in AR grade, specified at ≥99% purity. Its molecular formula is C8H5KO4 and its molecular weight is 204.22 g/mol. Its systematic (IUPAC) name is potassium 2-carboxybenzoate. It is also known as Potassium phthalate monobasic or Potassium biphthalate.

The material typically appears as white powder or crystals or chunks. Key physical data: a melting point of 295-300 °C and a density of 1.64 g/cm3 at 20 °C. Store sealed in a dry, well-ventilated location away from incompatible materials. Under GHS it is labelled “Danger”, so handle it with suitable PPE and consult the SDS.

Typical applications include buffer preparation and materials research. Our customers for this product work in academic and industrial research.

We offer Potassium hydrogen phthalate in 500 g, 5 kg and 4 x 25 kg packs with a batch-specific COA, and ship to customers worldwide.

Typical applications

Buffer preparation
Materials research

Industries

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	Potassium hydrogen phthalate, GR 99%+
Catalogue No.	VQ-014029
CAS Number	877-24-7
IUPAC name	potassium 2-carboxybenzoate
Molecular formula	C₈H₅KO₄
Molecular weight	204.22 g/mol
Exact mass	203.9825
Grade	AR
Purity / assay	≥99%
HSN code	29173990
InChIKey	IWZKICVEHNUQTL-UHFFFAOYSA-M
SMILES	C1=CC=C(C(=C1)C(=O)O)C(=O)[O-].[K+]
PubChem CID	23676735

Physical properties
Physical form	Crystalline
Appearance	White powder or crystals or chunks
Melting point	295-300 °C
Density	1.64 g/cm3 at 20 °C
H-bond donors / acceptors	1 / 4
TPSA	77.4 Å²
Synonyms	Potassium phthalate monobasic, Potassium biphthalate, Hydrogen potassium phthalate, Potassium acid phthalate, 1,2-Benzenedicarboxylic acid, monopotassium salt, Monopotassium phthalate, Phthalic acid monopotassium salt, Phthalic acid, monopotassium salt, 1,2-Benzenedicarboxylic acid, potassium salt (1:1), Phthalic acid monopotassium, Potassium phthalate monobasic pound KHP pound(c)

Safety & hazard information (GHS)

Corrosive

Signal word: Danger

Hazard statements

H318Causes serious eye damage

Precautionary statements: P264 + P265, P280, P305 + P354 + P338, P317

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Other grades of CAS 877-24-7

Extra Pure

Potassium hydrogen phthalate, 99%

CAS: 877-24-7
Formula: C₈H₅KO₄
MW: 204.22 g/mol

VQ-014028

HPLC

Potassium hydrogen phthalate, for HPLC 99%+

CAS: 877-24-7
Formula: C₈H₅KO₄
MW: 204.22 g/mol

VQ-003105

Frequently asked questions

What is the CAS number of Potassium hydrogen phthalate, GR 99%+?

The CAS Registry Number of Potassium hydrogen phthalate, GR 99%+ is 877-24-7. It is also known as Potassium phthalate monobasic, Potassium biphthalate, Hydrogen potassium phthalate.

What is the molecular formula and molecular weight of Potassium hydrogen phthalate, GR 99%+?

Potassium hydrogen phthalate, GR 99%+ has the molecular formula C8H5KO4 and a molecular weight of 204.22 g/mol. Its IUPAC name is potassium 2-carboxybenzoate.

Which grade and pack sizes of Potassium hydrogen phthalate, GR 99%+ can I order?

We supply Potassium hydrogen phthalate, GR 99%+ in AR (≥99%) grade, in 500 g, 5 kg, 4 x 25 kg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with Potassium hydrogen phthalate, GR 99%+?

Yes. Every lot of Potassium hydrogen phthalate, GR 99%+ is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can Potassium hydrogen phthalate, GR 99%+ be shipped internationally?

Yes. Potassium hydrogen phthalate, GR 99%+ is classified as hazardous, so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.