Potassium hydrogen phthalate, ACS reagent, acidimetric standard

Catalog No.	Quantity	Packaging
AC424061000	100 g	Plastic bottle
AC424065000	500 g	Plastic bottle
AC424060025	2.5 kg	Plastic bottle

Catalog No. AC424061000 Supplier Thermo Scientific Chemicals Supplier No. 424061000

Description

CAS: 877-24-7 | C₈H₅KO₄ | 204.22 g/mol

This Thermo Scientific Chemicals brand product was originally part of the Acros Organics product portfolio. Some documentation and label information may refer to the legacy brand. The original Acros Organics product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.

Specifications

Chemical Identifiers

• CAS: 877-24-7
• Molecular Formula: C₈H₅KO₄
• Molecular Weight (g/mol): 204.22
• MDL Number: MFCD00013070
• InChI Key: IWZKICVEHNUQTL-UHFFFAOYSA-M
• Synonym: potassium hydrogen phthalate, potassium biphthalate, monopotassium phthalate, potassium acid phthalate, hydrogen potassium phthalate, phthalic acid monopotassium salt, 1,2-benzenedicarboxylic acid, monopotassium salt, phthalic acid, monopotassium salt, phthalic acid potassium salt, potassium phthalate monobasic
• PubChem CID: 23676735
• IUPAC Name: potassium;2-carboxybenzoate
• SMILES: C1=CC=C(C(=C1)C(=O)O)C(=O)[O-].[K+]

• Melting Point: 295.0°C to 300.0°C
• Color: White
• pH: 4.00 to 4.02 (0.05M soln. at 25°C ±0.2°C)
• Infrared Spectrum: Authentic
• Packaging: Plastic bottle
• Linear Formula: 2-(HO₂C)C₆H₄CO₂K
• Quantity: 100 g
• Beilstein: 09, 791
• Merck Index: 15, 7733
• Solubility Information: Solubility in water: 80g/L (20°C). Other solubilities: 330g/L water (100°C),slightly soluble in alcohol
• Formula Weight: 204.22
• Percent Purity: 99.95 to 100.05% (on dried substance)
• Grade: ACS Reagent
• Insoluble Matter: 0.005% max
• Physical Form: Crystalline Powder or Crystals
• Chemical Name or Material: Potassium hydrogen phthalate

Safety and Handling

EINECSNumber	212-889-4
RTECSNumber	CZ4326000
TSCA	TSCA

SDS

RUO – Research Use Only