Production process and product standard of 2-aminoanthraquinone

6.
Production process

1) 2-Chloroanthraquinone method

Firstly, 115kg 2- chloroanthraquinone , 9kg copper sulfate , 160kg ammonia water are beaten, mixed thoroughly and then pressed into the ammoniating autoclave, heated to 213～215℃, reacted at 5.
0～5.
39MPa pressure for 5h, released pressure to recover residual ammonia
.

2) Anthracene-2-ammonium sulfonate method

240kg of anthraquinone-2-sulfonic acid ammonium salt, 70kg of sodium m-nitrobenzene sulfonate (anti-dye salt S) and 684kg of 25% ammonia water were beaten and pressed into the autoclave
.

7.
Product Standard

8.
Quality inspection

Content determination: accurately weigh 1g of the dried sample, place it in a 500mL beaker, add 20mL of concentrated sulfuric acid, and heat it on a boiling water bath until the sample is completely dissolved
.

In the formula: c——molar concentration of sodium nitrite standard solution, mol/L;

V ₁ ——The volume of sodium nitrite standard solution consumed by the sample, mL;

V ₂ ——The volume of sodium nitrite standard solution consumed in the blank experiment, mL;

G——The mass of the sample, g
.

9.
Product use

Used as an intermediate for vat dyes, mainly used to manufacture vat blue RSN, vat yellow G, vat yellow 8G and 1-chloro-2-aminoanthraquinone dyes
.

10.
Security measures

(1) The raw material anthraquinone and the product 2-aminoanthraquinone are toxic or irritating.
Operators should wear labor protection equipment and strengthen ventilation in the workshop
.

(2) The ammoniation reactor must meet the pressure requirements, and the operator should strictly implement the operating procedures
.

(3) Packed in iron drum lined with plastic bag, stored in a cool, dry place, protected from sun and moisture
.

Related links: Production principle and process flow of 2-aminoanthraquinone