Impurities ABE
(E)-4,4'-(diazene-1,2-diyl)dibenzoic acid
CAS: 71987-42-3
Molecular Formula: C14H10N2O4
Impurities ABE - Names and Identifiers
| Name | (E)-4,4'-(diazene-1,2-diyl)dibenzoic acid |
| Synonyms | Impurities ABE (E)-Azobenzene-4,4'-dicarboxylic acid (E)-4,4'-(diazene-1,2-diyl)dibenzoic acid Benzoic acid, 4,4'-(1E)-1,2-diazenediylbis- |
| CAS | 71987-42-3 |
Impurities ABE - Physico-chemical Properties
| Molecular Formula | C14H10N2O4 |
| Molar Mass | 270.24 |
| Density | 1.35±0.1 g/cm3(Predicted) |
| Melting Point | >270 °C |
| Boling Point | 541.2±35.0 °C(Predicted) |
| pKa | 3.46±0.10(Predicted) |
Impurities ABE - Introduction
Nature:
(E)-4,4 '-(diazene-1,2-diyl)dibenzoic acid is an orange-yellow crystalline solid. It is only slightly soluble in water at room temperature, but soluble in organic solvents such as ethanol and dichloromethane. It has a certain thermal stability and will decompose at high temperatures. This compound is colored, sensitive to light and photodegrades when exposed to light.
Use:
(E)-4,4 '-(diazene-1,2-diyl)dibenzoic acid is mainly used in the field of organic dyes. It acts as a color base or light generator in the dye, which can give the dye specific color and photosensitive properties. In addition, it can also be used as a component of certain photosensitive materials, such as photopolymerizable materials, photoresists, etc.
Preparation Method:
The preparation method of (E)-4,4 '-(diazene-1,2-diyl)dibenzoic acid is generally obtained by azo reaction. First, phthalic acid and sodium nitrite are subjected to a coupling reaction under appropriate conditions to produce an azophthalic acid salt. (E)-4,4 '-(diazene-1)-diyl dibenzoic acid can then be obtained by converting the acid salt into the corresponding acid by adding acid or pyrolysis.
Safety Information:
(E)-4,4 '-(diazene-1,2-diyl)dibenzoic acid is relatively safe under general conditions of use, but the following points still need to be paid attention. First, avoid prolonged contact with the skin or inhalation of dust, as it may cause irritation to the skin and respiratory tract. Second, avoid contact with strong oxidants and strong acids to avoid chemical reactions. Finally, store away from fire and high temperatures to prevent burning or explosion. In any operation, the laboratory safety operation procedures should be strictly followed.
Last Update：2024-04-09 21:01:54
