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Phenol, 2,4-dinitro-, sulfurized, leuco derivs.

CAS No.
66241-11-0
Chemical Name:
Phenol, 2,4-dinitro-, sulfurized, leuco derivs.
Synonyms
Cassulfon Black SR;Immedial Black C-BR;Cassulfon Black C-BR;Diresul Black RDT 4D;Leuco Sulfur Black 1;Diresul Black RDT 2KS;Leuco Sulphur Black 1;Diresul Liquid Black RDT;C.I. Leuco Sulphur Black 1;Diresul Liquid Black RDT-LS
CBNumber:
CB4892834
Molecular Formula:
Molecular Weight:
0
MDL Number:
MOL File:
Mol file
Last updated:2026-05-12 09:13:37

Phenol, 2,4-dinitro-, sulfurized, leuco derivs. Properties

Boiling point 99.9℃ at 99.8kPa
Density 0.51 at 20.4℃
vapor pressure 0Pa at 25℃
form Paste
EPA Substance Registry System C.I. Leuco Sulphur Black 1 (66241-11-0)

SAFETY

Risk and Safety Statements

RIDADR  2801
TSCA  TSCA listed
HazardClass  8
PackingGroup  III
REACH Registrations Active

Phenol, 2,4-dinitro-, sulfurized, leuco derivs. Chemical Properties, Uses, Production

Preparation

2,4-Dinitrophenolor its Sodium salt (by1-Chloro-2,4-dinitrobenzenealkaline hydrolysis)and Sodium polysulfide heating, in 110 ~ 120 ℃ reflux heating 48 to 72 hours, or in 130 ~ 140 ℃ under pressure to short time heating, then dilution melt, adding acid or air oxidation make dye completely precipitated out. In the molten material to the intermediate Sodium polysulfide proportion must be appropriate, such ability in reaction end solution almost no dye residual.

Properties and Applications

green black and blue black. Black uniform powder. Insoluble in water and Etanol. In the Sodium sulfide solution solubility is good, for green black; Add Sodium hydroxide and Sodium sulfide solution of colour and lustre is blue; Add hydrochloric acid Sodium sulfide solution to have green black precipitation; In the cold part of concentrated sulfuric acid solution, after heating for deep green light blue, further heating into dark blue; In 25% of fuming sulfuric acid for black blue, dilution after green black precipitation.

Standard Acid Resistance Alkali Resistance Light Fastness Fulling Persperation Fastness Soaping
Moderate Severe
ISO 4-5 4-5 6-7 4-5 5 5 4-5
AATCC 5 5 6-7 4 4-5

Phenol, 2,4-dinitro-, sulfurized, leuco derivs. Preparation Products And Raw materials

Raw materials

Preparation Products

Phenol, 2,4-dinitro-, sulfurized, leuco derivs. Suppliers

Global Suppliers ( 2)
Supplier Tel Email Country ProdList Advantage
XIAMEN AMITY INDUSTRY AND TRADE CO., LTD. +8618950047208 ellena@amitychem.com China 43392 58
Phenol, 2,4-dinitro-, sulfurized, leuco derivs. Leuco Sulphur Black 1 C.I. Leuco Sulphur Black 1 Leuco sulfur black 1 (C.I. 53185) Clariant Diresul Black PD Liquid Cassulfon Black C-BR Cassulfon Black SR Diresul Black RDT 2KS Diresul Black RDT 4D Diresul Liquid Black RDT Diresul Liquid Black RDT 2KS Diresul Liquid Black RDT-LS Diresul Liquid Black RL 200 Immedial Black C-BR Leuco Sulfur Black 1 C.I.Leuco Sulphur Black 1:C.I.53185 Phenol, 2,4-dinitro-, sulfurized, leuco derivatives 66241-11-0