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C.I. Reactive Yellow 81

C.I. Reactive Yellow 81 structure

CAS No:
59112-78-6
Chemical Name:
C.I. Reactive Yellow 81
Synonyms:
C.I. Reactive Yellow 81;Procion Yellow H-E 3G;Cibacron Yellow G-E;Reactive Yellow 81;Reactofix Yellow HE 4G;Reactive Yellow HE 4G;1258013-00-1
Categories:
Dyes and Pigments > Dye

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C.I. Reactive Yellow 81 Basic Attributes

Molecular Weight：

0.00000

Characteristics

PSA：

0.00000

XLogP3：

0.00000

Safety Information

Transport codes：

NONH for all modes of transport

wgk germany：

safety instructions：

22-24/25

C.I. Reactive Yellow 81 Use and Manufacturing

Methods of Manufacturing

Using DSD acid (diaminostilbene disulfonic acid), cyanuric chloride, 2, 4-diaminobenzenesulfonic acid and 1-(4'-sulfophenyl)-3-methyl-5-pyrazolone as raw materials, First, the DSD acid is condensed with cyanuric chloride, and then with 2, 4-diaminobenzenesulfonic acid for the second time. Then, the condensation product is double-nitridated to form a condensation product with 1-(4'-sulfophenyl)- 3-Methyl-5-pyrazolone coupling product. After salting out, filtering and drying, the finished product is obtained.

Uses

Reactive bright yellow KE-3G is mainly used for dyeing cotton and viscose fibers, mostly for viscose fibers. It is also used for the direct printing of cotton and viscose fabrics, as well as the dyeing of silk, diacetate and vinylon. Levelling and dyeing performance are better. It can also be used to dye polyester/cotton blended fabric in the same bath with disperse dyes. The dyed product can be treated with fixing agent Y to improve the washing fastness.