Eriochrome Black T

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Eriochrome Black T

Product Name: Eriochrome Black T
CAS No.: 1787-61-7
Chemical Name: Eriochrome Black T
Synonyms: BT;EBT;CHROME BLACK T;ERICHROME BLACK T;ERIOCHROME BLACK;MORDANT BLACK 11;NBC2;NBC3;SBC2;F-241
CBNumber: CB5457454
Molecular Formula: C20H12N3NaO7S
Formula Weight: 461.38
MOL File: 1787-61-7.mol

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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)
EPA Substance Registry System: C.I. Mordant Black 11, monosodium salt (1787-61-7)

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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

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Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H411Toxic to aquatic life with long lasting effects

Precautionary statements

P273Avoid release to the environment.

P391Collect spillage. Hazardous to the aquatic environment

P501Dispose of contents/container to..…

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N-Bromosuccinimide Price

Sigma-Aldrich

Product number: 858390
Product name: Eriochrome? Black T
Purity: ACS reagent (indicator grade)
Packaging: 100g
Price: $33.4
Updated: 2024/03/01

Sigma-Aldrich

Product number: 858390
Product name: Eriochrome? Black T
Purity: ACS reagent (indicator grade)
Packaging: 1kg
Price: $218
Updated: 2024/03/01

Sigma-Aldrich

Product number: 1.03170
Product name: Eriochrome black T (C.I. 14645)
Purity: indicator for complexometry ACS,Reag. Ph Eur
Packaging: 25G
Price: $67.2
Updated: 2024/03/01

Sigma-Aldrich

Product number: 1.03170
Product name: Eriochrome black T (C.I. 14645)
Purity: indicator for complexometry ACS,Reag. Ph Eur
Packaging: 100G
Price: $235
Updated: 2024/03/01

TCI Chemical

Product number: E0020
Product name: Eriochrome Black T Complex
Packaging: 25g
Price: $58
Updated: 2021/12/16

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Eriochrome Black T Chemical Properties,Usage,Production

Chemical Properties

black powder

Uses

Eriochrome black T is used as an indicator in analytical chemistry. It is also used in the detection of rare earth metals. It finds application in dyeing and printing of wool fabric, dyeing of silk and nylon as well as in leather dyeing. It can be used in the spectrophotometric determination of diphenhydramine hydrochloride in pharmaceutical preparations. As a complexometric indicator, it is useful in the determination of hardness of water.

Uses

Eriochrome^? Black T has been used to determine the concentration of Ca²⁺ using complexometric titration method.

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.

General Description

Eriochrome^? Black T is used as an indicator for complexometric titrations. It functions as an acid-base indicator. Eriochrome^? Black T forms complex with Ca²⁺ and Mg²⁺, but it binds more strongly to Mg²⁺ ions.

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
Standard	Ironing Fastness	Light Fastness	Alkali	Acid	Persperation Fastness	Soaping	Water
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

1-Naphthol Quinoline 2-DIAZO-1-NAPHTHOL-4-SULFONIC ACID HYDRATE Hydrochloric acid Sodium hydroxide dyeing 2-Naphthol Sulfuric acid

Preparation Products

high tempreature leveler U-100

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View Lastest Price from Eriochrome Black T manufacturers

WUHAN FORTUNA CHEMICAL CO., LTD

Product: Eriochrome Black T 1787-61-7
Price: US $0.00/KG
Min. Order: 10KG
Purity: 98%min
Supply Ability: 300KG/month
Release date: 2023-01-10

Shandong Deshang Chemical Co., Ltd.

Product: Eriochrome Black T 1787-61-7
Price: US $10.00-7.00/kg
Min. Order: 1kg
Purity: 99.99%
Supply Ability: 10 tons
Release date: 2024-06-13

Zhuozhou Wenxi import and Export Co., Ltd

Product: Eriochrome Black T 1787-61-7
Price: US $15.00-10.00/KG
Min. Order: 1KG
Purity: 99%+ HPLC
Supply Ability: Monthly supply of 1 ton
Release date: 2021-07-11

1787-61-7, Eriochrome Black TRelated Search:

Mordant Red 19 Acid Black 26 CHLOROPHOSPHONAZO III Acid Black ATT Naphthalene Acid Black 2 Mordant Black 3 ACID BLACK 24 Mordant Black 17 4-Amino-benzenesulfonic acid monosodium salt 4-Aminothiophenol 1-Naphthalenesulfonic acid Nitrosobenzene NITROGEN DIOXIDE ERIOCHROME BLACK A 2-NAPHTHYLAMINE-8-SULFONIC ACID 2-NITRONAPHTHALENE Naphthionic acid

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

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