CAS 4409-98-7: Dipotassium phthalate
Description:Dipotassium phthalate, with the CAS number 4409-98-7, is a chemical compound that serves primarily as a buffering agent and a standard in analytical chemistry. It is a white, crystalline solid that is highly soluble in water, making it useful in various aqueous applications. The compound is the dipotassium salt of phthalic acid, and its molecular formula is C8H5K2O4. It is often utilized in the preparation of buffer solutions due to its ability to maintain a stable pH, particularly in the range of 4 to 5. Additionally, dipotassium phthalate is non-toxic and environmentally friendly, which makes it suitable for use in food and pharmaceutical applications. Its stability under a wide range of conditions and compatibility with various substances further enhance its utility in laboratory settings. However, like all chemicals, it should be handled with care, following appropriate safety guidelines to avoid any potential hazards.
Formula:C8H6O4·2K
InChI:InChI=1S/C8H6O4.2K/c9-7(10)5-3-1-2-4-6(5)8(11)12;;/h1-4H,(H,9,10)(H,11,12);;
InChI key:InChIKey=DFOLZSTWYAQVDC-UHFFFAOYSA-N
SMILES:[K].O=C(O)C=1C=CC=CC1C(=O)O
- Synonyms:
- 1,2-Benzenedicarboxylic Acid, Monopotassium Salt
- 1,2-Benzenedicarboxylic acid, dipotassium salt
- 1,2-Benzenedicarboxylic acid, potassium salt (1:2)
- Dipotassium Benzene-1,2-Dicarboxylate
- Dipotassium phthalate
- di-Potassium Phthalate
- Phthalic acid, dipotassium salt
Brand | Product data | Purity | Price range | Estimated delivery |
---|---|---|---|---|
![]() | 1,2-Benzenedicarboxylic acid, potassium salt (1:2) REF: IN-DA003TRHCAS: 4409-98-7 | 98% | To inquire | Mon 14 Apr 25 |
![]() | Di-Potassiumphthalate REF: 54-OR1026852CAS: 4409-98-7 | 98% | 36.00 €~928.00 € | Tue 15 Apr 25 |
![]() | Potassium phthalate REF: 10-F448614CAS: 4409-98-7 | 95.0% | To inquire | Thu 24 Apr 25 |
![]() | Phthalic acid dipotassium salt REF: 3D-FP34461CAS: 4409-98-7 | Min. 95% | - - - | Discontinued product |

1,2-Benzenedicarboxylic acid, potassium salt (1:2)
Ref: IN-DA003TRH
1g | 54.00 € | ||
5g | 53.00 € | ||
25g | 174.00 € | ||
100g | 242.00 € | ||
500g | To inquire |

Ref: 54-OR1026852
5g | 36.00 € | ||
25g | 141.00 € | ||
100g | 267.00 € | ||
500g | 928.00 € |

Potassium phthalate
Ref: 10-F448614
5g | To inquire | ||
25g | To inquire | ||
100g | 343.00 € |

Phthalic acid dipotassium salt
Ref: 3D-FP34461
5g | Discontinued | Request information | |
10g | Discontinued | Request information | |
25g | Discontinued | Request information | |
50g | Discontinued | Request information | |
100g | Discontinued | Request information |