short description:

Property Yellow uniform powder, soluble in cold water, soluble in hot water was bright yellow, soluble in ethanol was yellow, its aqueous solution temperature over 70 ℃ will be decomposed into tetramethylbenzophenone, its aqueous solution when added to concentrated sulfuric acid was colorless, after dilution was light yellow.

Use: Low sunlight fastness. Mainly used in the dyeing of hemp, paper, leather, straw woven products, rayon, etc., also used in the printing and dyeing of cotton fabrics. Its color precipitation for the system wallpaper, color paper, ink and paint. Used for acetic acid fiber; mordant dyeing cotton, but the fastness is low, the color is bright, can be used to spell green or red, etc.. Can also be used for leather; paper; hemp and viscose dyeing. Alkaline can be used for coloring oil; fat; paint, etc.. It can also be used to prepare color deposits for ink

Clinical poisoning
It has a mild irritating effect on the mucous membranes of the skin and can cause dermatitis, conjunctivitis and upper respiratory tract irritation. Bladder cancer has been reported in workers who produced alkaline cough yellow. However, no bladder cancer was reported in workers who used alkaline cough yellow. Therefore, it is believed that the carcinogenic substance may be an intermediate of cough yellow. No cases of poisoning have been reported in China. See Toxicological Data.

Health examinations every two years, including dermatology and internal medicine. Routine blood, urine and chest X-ray.