The Hydrogen potassium phthalate with CAS registry number of 877-24-7 is also known as 1,2-Benzenedicarboxylic acid, potassium salt (1:1). The IUPAC name is Potassium 2-carboxybenzoate. It belongs to product categories of Inorganic & Organic chemicals; Classes of Metal Compounds; K (Potassium) Compounds (excluding simple potassium salts); Typical Metal Compounds. Its EINECS registry number is 212-889-4. In addition, the formula is C₈H₆O₄.K and the molecular weight is 204.22. This chemical is a white crystalline powder and shouold be sealed in cool ang dry place. What's more, it is used as analytical reagent and a buffering agent or sodium hydroxide.

Physical properties about Hydrogen potassium phthalate are: (1)ACD/LogP: 0.81; (2)ACD/LogD (pH 5.5): -1.98; (3)ACD/LogD (pH 7.4): -3.3; (4)ACD/BCF (pH 5.5): 1; (5)ACD/BCF (pH 7.4): 1; (6)ACD/KOC (pH 5.5): 1; (7)ACD/KOC (pH 7.4): 1; (8)#H bond acceptors: 4; (9)#H bond donors: 2; (10)#Freely Rotating Bonds: 2; (11)Flash Point: 196.7 °C; (12)Enthalpy of Vaporization: 66.05 kJ/mol; (13)Boiling Point: 378.3 °C at 760 mmHg; (14)Vapour Pressure: 2.14E-06 mmHg at 25 °C.

Preparation of Hydrogen potassium phthalat. Firstly, potassium is dissolved in water and heated under stirring. Meanwhile, adding phthalic anhydride in multiple for 30 minutes. Secondly, the reaction solution is filtered, concentrated to saturation and cooled to room temperature. At last, product is obtained by crystallization and drying.

When you are using this chemical, please be cautious about it. As a chemical, it is irritating to eyes, respiratory system and skin. Besides, It may cause burns. During using it, wear suitable protective clothing, gloves and eye/face protection. Avoid contact with skin, eyes and do not breathe dust. If contact with eyes accidently, rinse immediately with plenty of water and seek medical advice. In case of accident or if you feel unwell seek medical advice immediately.

You can still convert the following datas into molecular structure:
1. Canonical SMILES: C1=CC=C(C(=C1)C(=O)O)C(=O)[O-].[K+]
2. InChI: InChI=1S/C8H6O4.K/c9-7(10)5-3-1-2-4-6(5)8(11)12;/h1-4H,(H,9,10)(H,11,12);/q;+1/p-1
3. InChIKey: IWZKICVEHNUQTL-UHFFFAOYSA-M

The toxicity data is as follows: