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Reactive Black 8

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Reactive Black 8

EINECS
CAS No. 12225-26-2 Density
Solubility Melting Point
Formula Unspecified Boiling Point
Molecular Weight Flash Point
Transport Information Appearance
Safety Risk Codes
Molecular Structure Molecular Structure of 12225-26-2 (C.I. Reactive Black 8) Hazard Symbols
Synonyms

2,7-Naphthalenedisulfonic acid, 5-[(4-amino-6-chloro-1,3,5-triazin-2-yl)amino]-4-hydroxy-3-[(2-hydroxy-5-nitrophenyl)azo]-, chromium cobalt complex;Chromium, 5-[(4-amino-6-chloro-1,3,5-triazin-2-yl)amino]-4-hydroxy-3-[(2-hydroxy-5-nitrophenyl)azo]-2,7-naphthalenedisulfonic acid complex;Cobalt, 5-[(4-amino-6-chloro-1,3,5-triazin-2-yl)amino]-4-hydroxy-3-[(2-hydroxy-5-nitrophenyl)azo]-2,7-naphthalenedisulfonic acid complex;Basilen Black P-BR;C.I. 18207;Cibacron Black B-D;Drimarene Black P-BL;Helaktyn Black DN;Kayacion Black P-N;Kayacion Black P-N Liquid 40;

 

Reactive Black 8 Chemical Properties

 C.I. Reactive Black 8 (CAS NO.12225-26-2) is a black powder. Solubility in water (50 °C ) for the 10g / L. Aqueous solution was Qingguang black, plus 1mol / L sodium hydroxide the color change, following the plus insurance, and hot pink, pale yellow solution, coupled with sodium perborate colors remain the same. Was purple in concentrated sulfuric acid, diluted with water, the color change; in concentrated nitric acid was purplish black, navy blue diluted with water to transmit.

Reactive Black 8 Uses

 C.I. Reactive Black 8 can be used for cotton, viscose fiber dyeing and fastness are all good, usually only used for dyeing gray or color light. It can also be with the reactive brilliant orange KG, Reactive Brilliant Blue to fight brown, and gray fight KR reactive brilliant orange. It is also used silk and cotton blended fabrics-dimensional direct printing, polyester-cotton blended fabric 2 bath dyeing.

Reactive Black 8 Production

 C.I. Reactive Black 8 is based on 2 - hydroxy -5 - nitroaniline, H acid, cyanuric chloride and sulfuric acid chromium, cobalt sulfate as raw materials, first 2 - hydroxy -5 - nitroaniline diazotization, coupling with H acid, and then the coupling products in the presence of sodium acetate and sulfuric acid followed by chromium, cobalt sulfate, the reaction of mixed-metal complex dyes mother. Will be followed by cyanuric chloride and metal complex dyes matrix condensation, and then ammonia was a product of the second condensation. After salting out, filtration, drying was finished.

Reactive Black 8 Toxicity Data With Reference

1.    

skn-rbt 500 mg/24H MLD

    85JCAE    Prehled Prumyslove Toxikologie; Organicke Latky Marhold, J.,Prague, Czechoslovakia.: Avicenum,1986,1293.
2.    

eye-rbt 500 mg/24H MLD

    85JCAE    Prehled Prumyslove Toxikologie; Organicke Latky Marhold, J.,Prague, Czechoslovakia.: Avicenum,1986,1293.
3.    

orl-rat LD50:9120 mg/kg

    85JCAE    Prehled Prumyslove Toxikologie; Organicke Latky Marhold, J.,Prague, Czechoslovakia.: Avicenum,1986,1293.

Reactive Black 8 Safety Profile

Mildly toxic by ingestion. A skin and eye irritant. When heated to decomposition it emits acrid smoke and irritating fumes.

Reactive Black 8 Specification

 C.I. Reactive Black 8 ,its CAS NO. is 12225-26-2,the synonyms is C.I. Reactive Black 8 ; Kayacion black p-n liquid 40 ; Ostazin black h-n ; Procion black h-n ; Reactive Black MN ; Active Black K ; Amaryl Black GRX ; Apollocion Black P-N .

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