Shanghai Nianxing Industrial Co., Ltd
China
Product Name: Eriochrome Black T
Price: Check
Purity: 98.0%
Stocking Period: 10 Day
Contact: Yang
Email: sales@echemcloud.com

Shanghai Jizhi Biochemical Technology Co., Ltd
China
Product Name: Eriochrome Black T
Price: ￥98.0/100g
Purity: 98.0%
Stocking Period: Inquiry
Contact: Liu jia
Email: 2130147988@qq.com

Dayang Chem (Hangzhou) Co., Ltd.
China
Product Name: Eriochrome Black T
Price: $Inquiry/100g $Inquiry/1kg $Inquiry/100kg $Inquiry/1000kg
Purity: 98.0%
Stocking Period: Inquiry
Contact: Ms Wang
Email: enquiry@dycnchem.com

Henan Tianfu Chemical Co., Ltd.
China
Product Name: Eriochrome Black T
Price: $Inquiry/1kg $Inquiry/25kg $Inquiry/1000kg $Inquiry/10ton
Purity: 99.0%
Stocking Period: Inquiry
Contact: Anson
Email: info@tianfuchem.com

1787-61-7

1787-61-7 structure

1787-61-7 structure

Name: Eriochrome Black T
Chemical Name: Eriochrome Black T
CAS Number: 1787-61-7
Molecular Formula: C₂₀H₁₂N₃NaO₇S
Molecular Weight: 461.38
Catalog: Dyes and pigments dye Acid Dyestuff
Create Date: 2018-06-14 18:31:09
Modify Date: 2025-08-20 18:33:37
Eriochrome black T indicator (C.I. 14645), 1% solid is a biochemical reagent that can be used as a biological material or organic compound for life science related research.

Name	Eriochrome Black T
Synonyms	1-Naphthalenesulfonic acid, 3-hydroxy-4-[(1-hydroxy-2-naphthyl)azo]-7-nitro-, sodium salt ERIO T EINECS 217-250-3 chromeblackpb MFCD00003935 Sodium 3-hydroxy-4-[(E)-(1-hydroxy-2-naphthyl)diazenyl]-7-nitro-1-naphthalenesulfonate Color index F-241 1-Naphthalenesulfonic acid, 3-hydroxy-4-[(E)-2-(1-hydroxy-2-naphthalenyl)diazenyl]-7-nitro-, sodium salt (1:1) Eriochrome4 Black T sodium 3-hydroxy-4-[(E)-(1-hydroxynaphthalen-2-yl)diazenyl]-7-nitronaphthalene-1-sulfonate C.I.4645 Eriochrome black T C.I. MORDANT BLACK 11 Sodium 3-hydroxy-4-[(E)-(1-hydroxy-2-naphthyl)diazenyl]-7-nitronaphthalene-1-sulfonate S NO 241 EBT 3-Hydroxy-4-[(1-hydroxy-2-naphthalenyl)azo]-7-nitro-1-naphthalenesulfonic Acid Monosodium Salt Mordant Black 11 1-(1-Hydroxy-2-naphthylazo)-6-nitro-2-naphthol-4-sulfonic Acid Sodium Salt 2-Naphthol-4-sulfonic acid, 1-[(1-hydroxy-2-naphthyl)azo]-6-nitro-, sodium salt Black T

Description	Eriochrome black T indicator (C.I. 14645), 1% solid is a biochemical reagent that can be used as a biological material or organic compound for life science related research.
Related Catalog	Research Areas >> Others

Density	1.109 g/mL at 25 °C
Molecular Formula	C₂₀H₁₂N₃NaO₇S
Molecular Weight	461.38
Flash Point	185 °C
Exact Mass	461.029358
PSA	176.58000
LogP	6.23590
Storage condition	Store at RT.
Water Solubility	50 g/L (20 ºC)

CHEMICAL IDENTIFICATION

RTECS NUMBER :: QK2197000

CHEMICAL NAME :: 1-Naphthalenesulfonic acid, 3-hydroxy-4-((1-hydroxy-2-naphthalenyl)azo)-7-nitro-, monosodium salt

CAS REGISTRY NUMBER :: 1787-61-7

LAST UPDATED :: 199710

DATA ITEMS CITED :: 3

MOLECULAR FORMULA :: C20-H12-N3-O7-S.Na

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 17590 mg/kg

TOXIC EFFECTS :: Behavioral - excitement Behavioral - changes in motor activity (specific assay) Gastrointestinal - hypermotility, diarrhea

REFERENCE :: BCTKAG Bromatologia i Chemia Toksykologiczna. (Ars Polona, POB 1001, 00-068 Warsaw 1, Poland) V.4- 1971- Volume(issue)/page/year: 21,65,1988

Personal Protective Equipment	Eyeshields;Gloves;type N95 (US);type P1 (EN143) respirator filter
Hazard Codes	Xi:Irritant;
Risk Phrases	R36
Safety Phrases	S39-S26-S37/39
RIDADR	3077
RTECS	QK2197000
HS Code	32041900

HS Code	32041900

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