Shanghai Nianxing Industrial Co., Ltd
China
Product Name: Vat Red 41
Price: Check
Purity: 98.0%
Stocking Period: 10 Day
Contact: Yang
Email: sales@echemcloud.com

DC Chemicals Limited
China
Product Name: Thioindigo
Price: $Inquiry/100mg $Inquiry/250mg $Inquiry/500mg
Purity: 98.0%
Stocking Period: 3 Day
Contact: Tony Cao
Email: sales@dcchemicals.com

Henan Tianfu Chemical Co., Ltd.
China
Product Name: TIANFUCHEM--High purity Vat Red 41 factory price
Price: $Inquiry/1kg $Inquiry/25kg $Inquiry/1000kg $Inquiry/10ton
Purity: 99.0%
Stocking Period: Inquiry
Contact: Anson
Email: info@tianfuchem.com

522-75-8

522-75-8 structure

522-75-8 structure

Name: Vat Red 41
Chemical Name: (2Z)-2-(3-oxo-1-benzothiophen-2-ylidene)-1-benzothiophen-3-one
CAS Number: 522-75-8
Molecular Formula: C₁₆H₈O₂S₂
Molecular Weight: 296.36400
Catalog: Dyes and pigments dye Solvent dye
Create Date: 2018-05-24 08:00:00
Modify Date: 2025-08-21 12:50:12

Name	(2Z)-2-(3-oxo-1-benzothiophen-2-ylidene)-1-benzothiophen-3-one
Synonyms	Fluorescent Red Dye Durindone Red BP Helindon Red BB EINECS 208-336-1 Isothioindigo Thioindigo Thioindigo Red S Ciba Pink B MFCD00191692 Thioindigo Red B Durindone Red B Tetra Pink B Antinolo Red B

Density	1.544 g/cm3
Boiling Point	409.2ºC at 760 mmHg
Molecular Formula	C₁₆H₈O₂S₂
Molecular Weight	296.36400
Flash Point	177ºC
Exact Mass	295.99700
PSA	84.74000
LogP	4.17520
Index of Refraction	1.797

CHEMICAL IDENTIFICATION

RTECS NUMBER :: DT4330000

CHEMICAL NAME :: (delta(sup 2,2'(3H,3'H))-Bibenzo(b)thiophene)-3,3'-dione

CAS REGISTRY NUMBER :: 522-75-8

BEILSTEIN REFERENCE NO. :: 0088277

LAST UPDATED :: 199701

DATA ITEMS CITED :: 4

MOLECULAR FORMULA :: C16-H8-O2-S2

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

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

ROUTE OF EXPOSURE :: Intraperitoneal

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 4170 mg/kg

TOXIC EFFECTS :: Behavioral - somnolence (general depressed activity)

REFERENCE :: GISAAA Gigiena i Sanitariya. For English translation, see HYSAAV. (V/O Mezhdunarodnaya Kniga, 113095 Moscow, USSR) V.1- 1936- Volume(issue)/page/year: 50(8),91,1985 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOHS - National Occupational Hazard Survey (1974) NOHS Hazard Code - M4429 No. of Facilities: 44 (estimated) No. of Industries: 2 No. of Occupations: 6 No. of Employees: 1582 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - M4429 No. of Facilities: 8 (estimated) No. of Industries: 1 No. of Occupations: 1 No. of Employees: 330 (estimated) No. of Female Employees: 115 (estimated)

Risk Phrases	R36/37/38
Safety Phrases	S26-S36
RTECS	DT4330000
HS Code	3204159000

Precursor 0
DownStream 1
88-21-1

HS Code	3204159000

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