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Leuco Sulphur Blue 7

Name:C.I.Leuco Sulphur Blue 7,C.I.53440

Molecular Structure:

C.I.Leuco Sulphur Blue 7,C.I.53440,CAS 69900-21-6,1327-57-7,Leuco Sulphur Blue L-BR

C.I.Leuco Sulphur Blue 7,C.I.53440,CAS 69900-21-6,1327-57-7,Leuco Sulphur Blue L-BR

CAS Registry Number:69900-21-6,1327-57-7

Manufacturing Methods : 4-(4-Amino-3-methylphenylamino)phenol with Sodium polysulfide solution in return 106 ~ 112 ℃ heating 50 hours, then 70 ~ 80 ℃ blow air make precipitation. This indophenol is by o- Toluidine and 4-Nitrosophenol in sulfuric acid in the condensation, then use Sodium sulfide reduction and have to. Sodium sulfide increase in the proportion of sulfur content and high temperature vulcanization, color is red and more bright-coloured dye.

Properties and Applications: red light blue to blue light purple. Dark brown liquid. PH value is 13.3; Viscosity 5.9 x 10-3 pa s.; Settleability (3000 r.p.m.); No separation, no settlement. In the Sodium sulfide solution solubility is good, for green grey; In concentrated sulfuric acid for blue purple, dilution of dark after precipitation.

Standard Acid Resistance Alkali Resistance Light Fastness Fulling Persperation Fastness Soaping
Moderate Severe
ISO 4 4-5 4-5 3-4(Alkali) 4-5 4 3
AATCC 5 5 5-6 4 4-5

List of Suppliers:

Leuco Sulphur Blue L-BR Bengbu Yongyan Dyes & Chemicals Co. Ltd

Cassulfon Indone R ( Cassella AG )

Diresul Liquid Blue 3R( Clariant GmbH )

Diresul Liquid Blue 3RC ( Clariant GmbH )

Diresul Liquid Blue RDT-G ( Clariant GmbH )

Diresul Liquid Navy G C ( Clariant GmbH )

Ecosol Liq Blue EAKJ ( SF Dyes Pvt Ltd )

Ecosol Liq Navy Blue IGN ( SF Dyes Pvt Ltd )

Ecosol Liq Ocean Blue EEE ( SF Dyes Pvt Ltd )

Patcosul Blue 8RCF ( BF Goodrich Specialty Chemicals )

Patcosul Navy 3RX New ( BF Goodrich Specialty Chemicals )

Patcosul Navy GIFN ( BF Goodrich Specialty Chemicals )

Sodyesul Liquid Blue 8R( Clariant GmbH )

Sodyesul Liquid Blue 8RCF ( Clariant GmbH )

Sodyesul Liquid Navy GICF( Clariant GmbH )


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