Product performance and production principle of anthraquinone-1-ammonium sulfonate

The molecular formula of anthraquinone-1-sulfonic acid ammonium salt is C ₁₄ H ₁₁ NO ₅ S, the molecular weight is 305.
34, and the structural formula is

1.
Product performance

Light yellow crystal, easily soluble in water, slightly soluble in ethanol
.

2.
Production principle

O-benzoyl benzoic acid in fuming sulfuric acid in the presence of a closed-loop, further sulfonated to obtain anthraquinone-1-sulfonic acid, 1-sulfonic acid and finally with aqueous ammonia and ammonium anthraquinone
.

3.
Process flow

4.
Technical formula (quality, portion)

5.
Main equipment

Mercury melting pot, sulfonation kettle, dilution tank, filter, storage tank, neutralization pot, filter press
.

6.
Process flow

Add 665kg of 20% oleum and 383kg of 65% oleum to the mercury melting pot (the concentration of the mixed oleum is 36.
5%), then add 5kg of metallic mercury, stir and heat to 80～90℃, keep warm for 5 ~6h
.

7.
Laboratory preparation method

Mix 208 g of pure and dry anthraquinone and 4 g of mercury oxide (or mercury sulfate) thoroughly, add them to a reaction flask containing 2000 mL of oleum under stirring, and stir to dissolve at 50°C
.

8.

Content ≥80%

9.

Used as dye intermediates

10.

(1) Raw materials such as phthaloyl benzoic acid, anthraquinone, and oleum are poisonous or irritating and corrosive.

(2) The product should be sealed and stored in a cool and dry place