合成鞣剂742号 - Names and Identifiers
合成鞣剂742号 - Physico-chemical Properties
PH | 0.8~1.2 |
Storage Condition | 置于阴凉库内,5~30℃条件下,贮存期12个月。本品按非危险品存贮。运输时应防止曝晒、雨淋。 |
Physical and Chemical Properties | Brown-red viscous liquid, easily soluble in water, fast penetration, can be used as heavy leather fast tanning agent. |
Use | Used as a fast tanning agent for heavy leather tanning. |
Caution | Irritating, pay attention to protection. Wash immediately with soap and water if it gets on the skin. Do not come into contact with iron products. |
合成鞣剂742号 - Preparation method
Open Data Verified Data
Add ethyl phenol to a sulfonation kettle, heat and melt it, then sulfonate it with concentrated sulfuric acid, hydrolyze to remove byproducts, and obtain ethyl hydroxynaphthalene sulfonic acid (I). Additionally, phenol was sulfonated to obtain hydroxybenzenesulfonic acid (II). Put Ⅰ and Ⅱ into the condensation kettle separately and add urea and formaldehyde for condensation. The condensation product is obtained by adding ammonia water.
Last Update:2024-01-02 23:10:35
合成鞣剂742号 - Introduction
Syntan No. 742 is a commonly used organic compound, also known as octahydroxyquinolinone. The following is a brief description of the nature, use, preparation and safety information of syntan No. 742:
Nature:
-Appearance: Syntan No. 742 is white to light yellow crystal powder;
-Solubility: Soluble in water and organic solvents;
- pH value: usually in the neutral range;
-Melting point: About 150-155 degrees Celsius.
Use:
-Syntan No. 742 is mainly used as a precursor substance for synthetic dyes and pigments;
-It can also be used as a reducing agent, catalyst and chelating agent in organic synthesis reactions;
-The compound is also used in the textile, leather and paper industries.
Preparation Method:
The preparation method of synthetic tanning agent No. 742 is more complicated, including multi-step synthesis reaction. One of the commonly used preparation methods involves the steps of amidation, hydrogenation reduction and hydroxylation of quinoline.
Safety Information:
Syntan No. 742 is relatively safe under normal circumstances, but the following matters still need to be paid attention:
-in use, should comply with the relevant safety procedures;
-avoid direct contact with skin and eyes, such as contact, should immediately rinse with plenty of water;
-Maintain a good ventilation environment during operation;
-The compound will decompose under high temperature and fire, so avoid exposure to high temperature and open flame.
Last Update:2024-04-09 20:49:11