| Identification | Back Directory | [Name]
Sulphur Blue 7 -Leuco | [CAS]
69900-21-6 | [Synonyms]
Leuco Sulfur Blue 7
Sulphur Blue 7 -Leuco
Leuco Sulphur Blue 7
Diresul Liquid Navy GC
C.I. Leuco Sulfur Blue 7
C.I.Leuco Sulphur Blue 7
Sodyesul Liquid Blue 8RCF
Leuco sulfur blue 7 (C.I. 53440)
C.I.Leuco Sulphur Blue 7:C.I.53440
Phenol,4-[(4-amino-3-methylphenyl)amino]-, reaction products with sodium sulfide, leuco derivative
Phenol, 4-[(4-amino-3-methylphenyl)amino]-, reaction products with sodium sulfide (Na2(Sx)), leuco derivs. | [EINECS(EC#)]
274-211-3 |
| Hazard Information | Back Directory | [Preparation]
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.
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Standard
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Acid Resistance
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Alkali Resistance
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Light Fastness
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Fulling
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Persperation Fastness
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Soaping
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Moderate
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Severe
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ISO
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4
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4-5
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4-5
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3-4(Alkali)
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4-5
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4
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3
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AATCC
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5
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5
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5-6
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4
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|
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4-5
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|
|
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