Name | 2,5-dimethoxy-4-[(4-nitrophenyl)azo]benzenediazonium |
Synonyms | BlacksaltK FastblacksaltK DaitoBlackSaltK C.I.Azoicdiazocomponent38 C.1.AzoicDiazoComponent38(37190) FAST BLACK K SALT PRACTICAL GRADE 2,5-dimethoxy-4-[(4-nitrophenyl)azo]benzenediazonium 2,5-dimethoxy-4-[(4-nitrophenyl)azo]-benzenediazoniu |
CAS | 27766-47-8 |
EINECS | 248-648-5 |
InChI | InChI=1/C14H12N5O4/c1-22-13-8-12(14(23-2)7-11(13)16-15)18-17-9-3-5-10(6-4-9)19(20)21/h3-8H,1-2H3/q+1 |
Molecular Formula | C14H12N5O4+ |
Molar Mass | 314.28 |
Physical and Chemical Properties | Jujube red powder, soluble in water, the melting point of 150 ° C (decomposition). |
Risk Codes | R36 - Irritating to the eyes R61 - May cause harm to the unborn child R45 - May cause cancer R20/21/22 - Harmful by inhalation, in contact with skin and if swallowed. |
Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. S53 - Avoid exposure - obtain special instructions before use. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. |
WGK Germany | 3 |
brown powder, soluble in water. Light Black, washing, Sun, ironing, chlorine bleaching has a good fastness.
4,4 '-diaminodiphenylamine sulfate after diazotization with methyl-o-aminophenyl ether coupling, weight of the chromophore after ammoniation and zinc chloride salt prepared.
for cotton, viscose fabric printing, coupled with the phenol as, easy to color. For blending black salt ANS, black salt G and black salt K were mixed at 40:60 to obtain black salt ANS.
EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
usage | is mainly used to mix black salt ANS with black salt g according to the ratio of 40:60. The color is black, easy to use, but the stability is not good, and it is easy to produce knife silk defects in printing. |
production method | using p-nitroaniline as raw material, diazotization with hydrochloric acid and sodium nitrite, then coupling with 2, 5-dimethoxyaniline hydrochloride, diazotization, and then double salt with zinc chloride. Kg/ton p-nitrobenzene 5102, 5-dimethoxyaniline 570 |