ChemicalBook > CAS DataBase List > Eriochrome Black T

Eriochrome Black T

Eriochrome Black T Structure
Eriochrome Black T
  • CAS No.1787-61-7
  • Chemical Name:Eriochrome Black T
  • CBNumber:CB5457454
  • Molecular Formula:C20H12N3NaO7S
  • Formula Weight:461.38
  • MOL File:1787-61-7.mol
Eriochrome Black T Property
  • Density  :1.109 g/mL at 25 °C
  • Flash point: :185 °C
  • storage temp.  :room temp
  • solubility  :50g/l
  • form  :Powder/Solid
  • pka :pK1:6.3;pK2:11.55 (25°C)
  • Colour Index  :14645
  • Specific Gravity :1.109
  • color  :Brownish-black to black
  • PH :3.7 (10g/l, H2O, 20℃)
  • Odor :Odorless
  • Water Solubility  :50 g/L (20 ºC)
  • Merck  :14,3667
  • BRN  :4121162
  • Stability: :Stable. Incompatible with strong oxidizing agents, strong reducing agents.
  • CAS DataBase Reference :1787-61-7(CAS DataBase Reference)
  • FDA UNII :MPC0KHJ23C
  • EPA Substance Registry System :C.I. Mordant Black 11, monosodium salt (1787-61-7)
Safety
  • 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
  • Toxicity :LD50 oral in rat: 17590mg/kg
Hazard and Precautionary Statements (GHS)
  • Symbol(GHS)
  • Signal wordDanger
  • Hazard statements H301-H315-H317-H319-H335-H371-H400
  • Precautionary statements P260-P264-P270-P271-P272-P273-P280-P301+P310+P330-P302+P352+P333+P313+P363-P304+P340+P312-P305+P351+P338+P337+P313-P308+P311-P391-P403+P233-P405-P501-P302+P352+P332+P313+P362+P364-P261-P280a-P304+P340-P305+P351+P338-P501a
Eriochrome Black T Price More Price(8)
  • Brand: Sigma-Aldrich
  • Product number: 858390
  • Product name : Eriochrome? Black T
  • Purity: ACS reagent (indicator grade)
  • Packaging: 100g
  • Price: $26.8
  • Updated: 2021/03/22
  • Buy: Buy
  • Brand: Sigma-Aldrich
  • Product number: 858390
  • Product name : Eriochrome? Black T
  • Purity: ACS reagent (indicator grade)
  • Packaging: 1kg
  • Price: $175
  • Updated: 2021/03/22
  • Buy: Buy
  • Brand: TCI Chemical
  • Product number: E0020
  • Product name : Eriochrome Black T Complex
  • Purity: 
  • Packaging: 25g
  • Price: $58
  • Updated: 2020/06/24
  • Buy: Buy
  • Brand: TCI Chemical
  • Product number: E0214
  • Product name : Eriochrome Black T
  • Purity: 
  • Packaging: 25g
  • Price: $56
  • Updated: 2021/03/22
  • Buy: Buy
  • Brand: Alfa Aesar
  • Product number: A17536
  • Product name : Eriochrome Black T
  • Purity: 
  • Packaging: 100g
  • Price: $29.2
  • Updated: 2021/03/22
  • Buy: Buy

Eriochrome Black T Chemical Properties,Usage,Production

  • Chemical Properties black powder
  • 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.
  • Preparation 4-Amino-3-hydroxy-7-nitronaphthalene-1-sulfonic acid diazotization, and Naphthalen-1-ol?coupling.
  • Properties and Applications blue 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 Methods The 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 materials
Preparation Products
Global(321)Suppliers
  • Supplier:
    career henan chemical co
  • Tel:+86-371-86658258
  • Fax:
  • Email:sales@coreychem.com
  • Country:CHINA
  • ProdList:29954
  • Advantage:58
  • Supplier:
    Chongqing Chemdad Co., Ltd
  • Tel:+86-13650506873
  • Fax:
  • Email:sales@chemdad.com
  • Country:CHINA
  • ProdList:37282
  • Advantage:58
  • Supplier:
    HANGZHOU CLAP TECHNOLOGY CO.,LTD
  • Tel:13588875226 86-571-88216897、88216896
  • Fax:86-571-88216895
  • Email:sales@hzclap.com
  • Country:CHINA
  • ProdList:6469
  • Advantage:58
1787-61-7, Eriochrome Black TRelated Search:
  • 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
  • DiacromoBlackPPS
  • diacromoblackpss
  • OmegaChromeBlackT,S,TDW
  • SalicinchromeBlackHC
  • solochromeblackwdfa
  • EBT
  • DIAMOND BLACK
  • CI 14645
  • CHROME BLACK T
  • CI NO 14645
  • COMPLEX ERIOCHROME BLACK T
  • F-241
  • ERIO T
  • ERIOCHROME BLACK T COMPLEX
  • ERIOCHROME BLACK T METHANOLIC SOLUTION
  • ERIOCHROME BLACK T (MONOSODIUM SALT)
  • ERIOCHROME BLACK T(R)
  • ERIOCHROME BLACK TS
  • ERIOCHROME BLACK T SUPRA
  • ERIOCHRONE BLACK T
  • ERIOCHROME(R) BLACK T
  • ERIOCHROME(R) BLACK T REAGENT
  • ERIOCHROME BLACK
  • ERIOCHROME BLACK T
  • ERICHROME BLACK T
  • 1-(1-HYDROXY-2-NAPHTHYLAZO)-6-NITRO-2-NAPHTHOL-4-SULFONIC ACID SODIUM SALT
  • MAN VER INDICATOR
  • LABOTEST-BB LT01148367
  • 2-HYDROXY-1-(1-HYDROXY-2-NAPHTHYLAZO)-6-NITRONAPHTHALENE-4-SULFONIC ACID SODIUM SALT
  • 1-Naphthalenesulfonic acid, 3-hydroxy-4-[(1-hydroxy-2-naphthyl)azo]-7-nitro-, monosodium salt
  • 2-Hydroxy-1-(1-hydroxy-2-naphthylazo)-6-nitro-4-naphthalenesulfonic acid, sodium salt
  • Color index
  • Mordant Black 11 (14650)
  • Mordant Black T
  • sodium 3-hydroxy-4-[(1-hydroxy-2-naphthyl)azo]-7-nitronaphthalene-1-sulphonate
  • BT
  • Acid mordant Black 11
  • Chrome Black ETS
  • ERIOCHROME BLACK T, A.C.S. REAGENT, INDI CATOR GRADE
  • C.I.4645
  • Eriochrome Black T p.a.
  • C.I.Mordant black II
  • EriochroMe (TM) Black T
  • EriochroMe Black T, pure, indicator grade
  • EriochroMe Black T, indicator grade, pure 100GR
  • 1-(1-Hydroxy-2-naphthylazo)-6-nitro-2-naphthol-4-sulfonic Acid Sodium Salt Mordant Black 11
  • Complex Eriochrome Black T Man Ver Indicator
  • ERIOCHROME BLACK T (C.I. 14645) METAL IN
  • TEriochroMe bla
  • Black T, indicator