POTASSIUMBIPHTHALATE,CRYSTAL,REAGENTSPECIAL,ACS
Potassium hydrogen phthalate
CAS: 877-24-7
Molecular Formula: C8H5KO4
POTASSIUMBIPHTHALATE,CRYSTAL,REAGENTSPECIAL,ACS - Names and Identifiers
| Name | Potassium hydrogen phthalate |
| Synonyms | SODIUM AMYL XANTHTATE Potassium biphthalete Potassium biphthalate pot. hydrogen phthalate Potassium acid phthalate potassium 2-carboxybenzoate Potassium hydrogen phthalate Potassium phthalate monobasic POTASSIUMBIPHTHALATE,ULTRAPURE Phthalic acid monopotassium salt POTASSIUMBIPHTHALATE,BIOTECHGRADE POTASSIUM ACID PHTHALATE BIO-REFINED POTASSIUM ACID PHTHALATE BUFFER GRADE POTASSIUMBIPHTHALATE,CRYSTAL,REAGENTSPECIAL,ACS potassium hydrogen phthalate, primary standard, acs Potassium hydrogen phthalate, reagent ACS, acidimetric standard |
| CAS | 877-24-7 |
| EINECS | 212-889-4 |
| InChI | InChI=1/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 |
| InChIKey | IWZKICVEHNUQTL-UHFFFAOYSA-M |
POTASSIUMBIPHTHALATE,CRYSTAL,REAGENTSPECIAL,ACS - Physico-chemical Properties
| Molecular Formula | C8H5KO4 |
| Molar Mass | 204.22 |
| Density | 1.006g/mLat 20°C |
| Melting Point | 295-300 °C (dec.) (lit.) |
| Boling Point | 98.5-99.5 ;°C/740 ;mmHg(lit .) |
| Flash Point | 196.7°C |
| Water Solubility | 80 G/L (20 ºC) |
| Solubility | Soluble in water, slightly soluble in alcohol. |
| Vapor Presure | 2.14E-06mmHg at 25°C |
| Appearance | White Crystals |
| Color | White |
| Odor | Odorless |
| Merck | 14,7612 |
| BRN | 3637128 |
| PH | 4.00-4.02 (25.0℃±0.2℃, 0.05M) |
| Storage Condition | Store at +5°C to +30°C. |
| Stability | Stable. Incompatible with strong oxidizing agents. |
| Sensitive | Easily absorbing moisture |
| MDL | MFCD00013070 |
| Physical and Chemical Properties | White crystals. The relative density was 1.636. Soluble in 12 parts of cold water, 3 parts of boiling water; Slightly soluble in ethanol. pH = 4.005 of the M aqueous solution at 25 °c. Decomposition at 295-300 °c. |
| Use | Used as a pyrotechnic sound agent |
POTASSIUMBIPHTHALATE,CRYSTAL,REAGENTSPECIAL,ACS - Risk and Safety
| Risk Codes | R36/38 - Irritating to eyes and skin. R36/37/38 - Irritating to eyes, respiratory system and skin. R34 - Causes burns R61 - May cause harm to the unborn child R60 - May impair fertility |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. S24/25 - Avoid contact with skin and eyes. S22 - Do not breathe dust. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S53 - Avoid exposure - obtain special instructions before use. |
| UN IDs | UN 1789 8/PG 3 |
| WGK Germany | 1 |
| RTECS | CZ4326000 |
| FLUKA BRAND F CODES | 34 |
| TSCA | Yes |
| HS Code | 29173990 |
| Toxicity | LD50 orally in Rabbit: > 3200 mg/kg |
POTASSIUMBIPHTHALATE,CRYSTAL,REAGENTSPECIAL,ACS - Upstream Downstream Industry
POTASSIUMBIPHTHALATE,CRYSTAL,REAGENTSPECIAL,ACS - Reference
| Reference Show more | 1. [IF=4.821] Yixin Nie et al."Nitrogen-rich quantum dots-based fluorescence molecularly imprinted paper strip for p-nitroaniline detection."Microchem J. 2019 Jul;148:162 |
POTASSIUMBIPHTHALATE,CRYSTAL,REAGENTSPECIAL,ACS - Reference Information
Open Data Unverified Data
| pH range of acid-base indicator discoloration | 3.8 - 4.0 (5% aq. sol.) |
| LogP | -2.73 |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Use | is used as a buffer for pH measurement and an analytical reference substance. use as analytical reagent and buffer use as pyrotechnic sound analytical reagent. The base was calibrated against the base. A buffer solution was prepared. Analytical reagents. The base was calibrated and a buffer solution was prepared. |
| production method | 660g caustic potash (85%) was dissolved in 1L of water. 1480G of phthalic anhydride was added in portions with heating and stirring, and the reaction was heated for 0.5h and filtered. The filtrate was concentrated to saturation, allowed to cool to room temperature, and the crystals were filtered off with suction and dried to obtain a finished product. |
Last Update：2024-04-09 19:43:38
POTASSIUMBIPHTHALATE,CRYSTAL,REAGENTSPECIAL,ACS - Nature
Open Data Verified Data
colorless orthorhombic crystal or white crystalline powder. Dissolve in about 12 parts of cold water, three parts of boiling water, the solution is acidic. Slightly soluble in ethanol.
Last Update：2024-01-02 23:10:35
POTASSIUMBIPHTHALATE,CRYSTAL,REAGENTSPECIAL,ACS - Preparation Method
Open Data Verified Data
caustic potash was dissolved in water and heated. Phthalic anhydride was added in several portions and stirred continuously, and the reaction was completed by heating. After filtration, the filtrate was evaporated to heat saturation and allowed to cool to room temperature. The crystals were filtered off with suction and dried to obtain potassium hydrogen phthalate.
Last Update：2022-01-01 09:25:36
POTASSIUMBIPHTHALATE,CRYSTAL,REAGENTSPECIAL,ACS - Introduction
Stable in air
Last Update：2022-10-16 17:29:32
POTASSIUMBIPHTHALATE,CRYSTAL,REAGENTSPECIAL,ACS - Use
Open Data Verified Data
analytical chemistry is often used as a reference material, the calibration of alkali titration solution. Before use, it should be dried at 100~125 ℃ for standby. It is also used to prepare standard buffer solutions. 0. 05moi/L solution, at 25 ℃, the pH value is 4. 008, if mixed with hydrochloric acid in a certain proportion, the pH value range from 2.2 to 5.5 of different buffer systems can be prepared.
Last Update：2022-01-01 09:25:37
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POTASSIUMBIPHTHALATE,CRYSTAL,REAGENTSPECIAL,ACS
四氢吡喃-4-乙酰氯
3-Cyclopentene-1-Carboxylic Acid
CYCLO(-GLY-GLN)
2-乙酰基间苯二酚
四氢吡喃-4-乙酰氯
3-Cyclopentene-1-Carboxylic Acid
CYCLO(-GLY-GLN)
2-乙酰基间苯二酚
Raw Materials for POTASSIUMBIPHTHALATE,CRYSTAL,REAGENTSPECIAL,ACS