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Eriochrome Black T

Eriochrome Black T structure

CAS No:
1787-61-7
Formula:
C20H13N3O7S.Na
Chemical Name:
Eriochrome Black T
Synonyms:
1-Naphthalenesulfonic acid,3-hydroxy-4-[2-(1-hydroxy-2-naphthalenyl)diazenyl]-7-nitro-,sodium salt (1:1);C.I. Mordant Black 11,monosodium salt;1-Naphthalenesulfonic acid,3-hydroxy-4-[(1-hydroxy-2-naphthalenyl)azo]-7-nitro-,monosodium salt;Chromogene Black ET;C.I. 14645;Acid Chrome Black A;Acid Chrome Black ET;Acid Chrome Black ET extra;Alizarine Chrome Black PT;Alizarine Chrome Black PT Supra;Anthranol Chrome Black T;Azochromol Black T;Calcochrome Black T;Chromazine Black T;Chrome Black T;Chrome Black ETOO;Chrome Black PB;Chrome Black TK;Chrome Black TX;Chrome Deep Black T;Chrome Fast Black T;Chrome Fast Black CAT;Chrome Fast Black KIT;Chrome Fast Black TS;Chromocard Black T;Chromogen Black ET-OO;Chromogen Black ETR;Chromogene Black T;Chromogene Black ET extra;Chromogene Black ETO-CF;Chromogene Black ETOO Supra CF;C.I. Mordant Black 11;Cromal Deep Black NS;Diacromo Black PA;Diacromo Black PSS;Diadem Chrome Black T;Diadem Chrome Black DFA;Diadem Chrome Black TDS;Diadem Chrome Black TW;Diamantine Black T;Diamond Black PT;Durochrome Black T;Durochrome Black ETOO;Durochrome Black TS;Durochrome Black WDFA;Eniacromo Black PA;Eriochrome Black DW;Eriochrome Black TDW;Erio Chrome Black TN;Eriochrome Black TND;Eriochrome Black TSS;Fast Chrome Black T;Fenakrom Black ET;Hispacrom Black T;Java Chrome Black T;Kenachrome Black T;Lighthouse Chrome Black T;Magracrom Black A;37371-16-7;162163-68-0
Categories:
Dyes and Pigments > Dye

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Description

black powder

Eriochrome Black T Basic Attributes

Molecular Weight：

461.38

Exact Mass：

461.029358

BRN：

4121162

EC Number：

217-250-3

HScode：

32041900

Characteristics

PSA：

176.58000

XLogP3：

6.23590

Appearance：

Brownish-black to black Powder/Solid

Density：

1.109 g/mL at 25 °C

Flash Point：

185 °C

Water Solubility：

H2O: 50 g/L (20 ºC)

Storage Conditions：

Store at RT.

Toxicity：

LD50 oral in rat: 17590mg/kg

Safety Information

Packing level：

III

Hazard category：

6.1

Transport codes：

3077

wgk germany：

hazard class code：

36-36/37/38-36/38

safety instructions：

39-26-37/39-24/25

RTECS Number：

QK2197000

Marks：

Stability/Shelf Life：

Stable. Incompatible with strong oxidizing agents, strong reducing agents.

Eriochrome Black T Use and Manufacturing

Methods of Manufacturing

Coupled by 6-nitro-1, 2, 4-acid oxygen (ie 6-nitro-2-hydroxy-1-diazonaphthalene-4-sulfonic acid) and 1-naphthol, after salting out, Filtration, drying and other flaking processes to prepare the product. The outside wind of the product is a dark brown uniform powder, the color light is similar to the standard product (blue light gray → blue light black), the intensity is 100±3 (minutes) of the standard product, the moisture content ≤5%, the water insoluble impurity content ≤1%, the fineness ( Through the 80 mesh sieve residue content ≤5%, the dyeing fastness on the wool meets the standard products (sunlight fastness level 7; soaping, water immersion, sweat stains, cooking, etc. brown fastness and carbonization, ironing , Dry cleaning and other fastnesses are 4-5, dry rubbing fastness is 3-4). Raw material consumption (kg/t) 6-nitro-1, 2, 4-acid oxygen (100%) 500 menadol (100%) 255 caustic soda (100%) 255 soda ash (industrial) 215 hydrochloric acid (31%) 675 refined salt 450

Uses

To dye wool from an acid bath reddish-black, which can be converted to blue-black by afterchroming.As indicator in the determination of the total calcium and magnesium content of water.

Material

Sodium hydroxide

Hydrochloric acid

Sulfuric acid

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ERIOCHROME BLACK T 1787-61-7

CAS No.: 1787-61-7

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