ChemicalBook > Product Catalog > Organic Chemistry > Organometallic compounds > Organopotassium > Potassium hydrogen phthalate
Potassium hydrogen phthalate
- Product Name:Potassium hydrogen phthalate
- CAS:877-24-7
- MF:C8H5KO4
- MW:204.22
- EINECS:212-889-4
- Mol File:877-24-7.mol
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Potassium hydrogen phthalate Chemical Properties
- Melting point:295-300 °C (dec.)(lit.)
- Boiling point:98.5-99.5 ;°C/740 ;mmHg(lit .)
- Density 1.006 g/mL at 20 °C
- storage temp. Store at RT.
- solubility H2O: 100 mg/mL, clear, colorless
- form Solid
- color White
- OdorOdorless
- PH4.00-4.02 (25.0℃±0.2℃, 0.05M)
- PH Range3.8 - 4.0 (5% aq. sol.)
- Water Solubility 80 G/L (20 ºC)
- Merck 14,7612
- BRN 3637128
- Stability:Stable. Incompatible with strong oxidizing agents.
- InChIKeyIWZKICVEHNUQTL-UHFFFAOYSA-M
- CAS DataBase Reference877-24-7(CAS DataBase Reference)
- EPA Substance Registry SystemMonopotassium phthalate (877-24-7)
- Hazard Codes Xi,C,T
- Risk Statements 36/38-36/37/38-34-61-60
- Safety Statements 26-36-24/25-22-45-36/37/39-53
- RIDADR UN 1789 8/PG 3
- WGK Germany 1
- RTECS CZ4326000
- F 34
- TSCA Yes
- HS Code 29173990
- ToxicityLD50 orally in Rabbit: > 3200 mg/kg
- Language:EnglishProvider:SigmaAldrich
- Language:EnglishProvider:ALFA
Potassium hydrogen phthalate Usage And Synthesis
- Chemical Propertieswhite crystalline powder
- UsesAs primary standard for preparing volumetric alkali solutions, also as a buffer in pH determinations.
- Purification MethodsCrystallise it first from a dilute aqueous solution of K2CO3, then H2O (3mL/g) between 100o and 0o. Before being used as a standard in volumetric analysis, analytical grade potassium hydrogen phthalate should be dried at 120o for 2hours, then allowed to cool in a desiccator. [Beilstein 9 IV 3169.]
Potassium hydrogen phthalate Preparation Products And Raw materials
- Raw materialsPotassium hydroxide Phthalic anhydride
- Potassium phthalate (2:1) Potassium hydrogen phthalate Potassium Potassium sulfate Folic acid Citalopram hydrobromide Potassium sorbate Potassium Bitartrate Bis(2-methoxyethyl) phthalate Dibutyl phthalate Losartan potassium BUFFER, BORATE,BUFFER (BORATE), PH 10,BUFFER COLOUR CODED CONCENTRATED SOLUTION PH 10 (BORATE) BLUE,BUFFER BORATE, PH 9.50,BUFFER BORATE, PH 9.5,BUFFER COLOUR CODED SOLUTION PH 10 (BORATE) BLUE,BUFFER SOLUTION, PH 10.00,BUFFER SOLUTION PH 10.00 BLUE,BUFFER,BORATE BUFFER,BORATE BUFFER, APHA,BORATE BUFFER SOLUTION,BORATE BUFFER PACKS Anthranilic acid phosphoric acid Potassium iodide Ethyl 2-(Chlorosulfonyl)acetate Phthalic anhydride Potassium persulfate
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