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Eriochrome Black T

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Company Name: career henan chemical co
Tel: +86-371-86658258
Email: sales@coreychem.com
Products Intro: Product Name:Eriochrome Black T
CAS:1787-61-7
Purity:99% Package:1kg;8USD
Company Name: Hubei Jusheng Technology Co.,Ltd.
Tel: 86-18871470254
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Products Intro: Product Name:Eriochrome Black T
CAS:1787-61-7
Purity:0.99 Package:5KG;1KG
Company Name: Chongqing Chemdad Co., Ltd
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Email: sales@chemdad.com
Products Intro: Product Name:Eriochrome Black T
CAS:1787-61-7
Purity:0.98 Package:1kg,2kg,5kg,10kg,25kg
Company Name: HENAN BON INDUSTRIAL CO.,LTD
Tel: 0371-55170695
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Purity:0.99 Package:25KG;5KG;1KG;500G
Company Name: CONIER CHEM AND PHARMA LIMITED
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Products Intro: Product Name:eriochrome black t
CAS:1787-61-7
Purity:0.99 Package:1kg

Lastest Price from Eriochrome Black T manufacturers

  • Eriochrome Black T
  • US $15.00-10.00 / KG
  • 2021-07-13
  • CAS:1787-61-7
  • Min. Order: 1KG
  • Purity: 99%+ HPLC
  • Supply Ability: Monthly supply of 1 ton
  • Eriochrome Black T
  • US $15.00-10.00 / KG
  • 2021-07-10
  • CAS:1787-61-7
  • Min. Order: 1KG
  • Purity: 99%+ HPLC
  • Supply Ability: Monthly supply of 1 ton
  • Eriochrome Black T
  • US $8.00 / kg
  • 2019-07-06
  • CAS:1787-61-7
  • Min. Order: 1kg
  • Purity: 99%
  • Supply Ability: 10MT
Eriochrome Black T Basic information
Product Name:Eriochrome Black T
Synonyms:1-naphthalenesulfonicacid,3-hydroxy-4-((1-hydroxy-2-naphthalenyl)azo)-7-nitro;1-naphthalenesulfonicacid,3-hydroxy-4-[(1-hydroxy-2-naphthalenyl)azo]-7-nitro;1-Naphthalenesulfonicacid,3-hydroxy-4-[(1-hydroxy-2-naphthalenyl)azo]-7-nitro-,monosodiumsalt;abcolchromeblacktn;abcolchromenavyrzn;acidchromeblacket;chromogeneblackt160;czernkwasowo-chromowaetn
CAS:1787-61-7
MF:C20H12N3NaO7S
MW:461.38
EINECS:217-250-3
Product Categories:Dyes and Pigments;Analytical Chemistry;Azo Compounds;Chelating Reagents;Naphthylazo Compounds
Mol File:1787-61-7.mol
Eriochrome Black T Structure
Eriochrome Black T Chemical Properties
density 1.109 g/mL at 25 °C
Fp 185 °C
storage temp. room temp
solubility 50g/l
form Powder/Solid
pkapK1:6.3;pK2:11.55 (25°C)
Colour Index 14645
Specific Gravity1.109
color Brownish-black to black
PH3.7 (10g/l, H2O, 20℃)
OdorOdorless
Water Solubility 50 g/L (20 ºC)
Merck 14,3667
BRN 4121162
Stability:Stable. Incompatible with strong oxidizing agents, strong reducing agents.
CAS DataBase Reference1787-61-7(CAS DataBase Reference)
EPA Substance Registry SystemC.I. Mordant Black 11, monosodium salt (1787-61-7)
Safety Information
Hazard Codes Xi
Risk Statements 36-36/37/38-36/38
Safety Statements 39-26-37/39-24/25
RIDADR 3077
WGK Germany 2
RTECS QK2197000
TSCA Yes
HazardClass 6.1
PackingGroup III
HS Code 32041900
ToxicityLD50 oral in rat: 17590mg/kg
MSDS Information
ProviderLanguage
C.I. 14645 English
ACROS English
ALFA English
Eriochrome Black T Usage And Synthesis
Chemical Propertiesblack powder
UsesTo 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.
Preparation4-Amino-3-hydroxy-7-nitronaphthalene-1-sulfonic acid diazotization, and Naphthalen-1-ol?coupling.
Properties and Applicationsblue black. Dark brown powder. Soluble in water for bordeaux red to jam red, moderate soluble in ethanol for brown light magenta, slightly soluble in Acetone. Dye in concentrated sulfuric acid for skipper, dilution to pale red light brown; In concentrated nitric acid to orange. Dye aqueous solution to join concentrated hydrochloric acid for sauce red; Join strong caustic into brown light magenta. Mainly used for all kinds of wool fabric dyeing, also used for silk, nylon and wool and a variety of fiber blended fabric dyeing, can be in chrome pretreatment of wool fabric direct printing. Is tasted can be used for indicator, also can be used for biological and fur dyeing.
Standard Ironing Fastness Light Fastness Fulling Persperation Fastness Soaping Water
Alkali Acid
ISO 4-5 7 5 5 5 5 5
AATCC 4-5 7 4-5 5 5 5
Purification MethodsThe sodium salt (200g) is converted to the free acid by stirring with 500mL of 1.5M HCl, and, after several minutes, the slurry is filtered on a sintered-glass funnel. The process is repeated and the material is air dried after washing with acid. It is then extracted with *benzene for 12hours in a Soxhlet extractor, the *benzene solution is evaporated and the residue is air dried. A further desalting with 1.5M HCl (1L) is followed by crystallisation from dimethylformamide (in which it is very soluble) by forming a saturated solution at the boiling point, and allowing to cool slowly. The crystalline dimethylammonium salt so obtained is washed with *benzene and treated repeatedly with dilute HCl to give the insoluble free acid which, after air drying, is dissolved in alcohol, filtered and evaporated. The final material is air dried, then dried in a vacuum desiccator over Mg(ClO4)2. The purified acid is converted to the dimethylammonium salt with Me2NH. [Diehl & Lindstrom, Anal Chem 31 414 1959]. It is an indicator in the complexometry of alkaline earth metals. [Beilstein 16 IV 429.]
Eriochrome Black T Preparation Products And Raw materials
Raw materialsSodium hydroxide-->Hydrochloric acid-->Sulfuric acid-->1-Naphthol-->Quinoline-->2-Naphthol-->2-DIAZO-1-NAPHTHOL-4-SULFONIC ACID HYDRATE
Preparation Productshigh tempreature leveler U-100
Tag:Eriochrome Black T(1787-61-7) Related Product Information
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