C.I. Vat Black 1

C.I.还原黑1

Also known as: 5-bromo-2-(9-chloro-3-oxonaphtho[1,2-b]thien-2(3H)-ylidene)-1,2-dihydro-3H-indol-3-one, (2E)-5-bromo-2-(9-chloro-3-oxobenzo[g][1]benzothiol-2-ylidene)-1H-indol-3-one, 2-(5-Bromo-3-oxo-2,3-dihydro-1H-indol-2-ylidene)-9-chloro-2,3-dihydronaphtho[1,2-b]thiophen-3-one, 5-bromo-2-(9-chloro-3-oxonaphtho(1,2-b)thien-2(3h)-ylidene)-3-indolinon, C.I. 73670, Durindone Printing Black BL, Helanthrene Black BL, Nako Fast Grey BL, Solanthrene Grey BL, Solanthrene Printing Black BL, Thioindigo Black, Tina Grey BL, Tina Printing Black BL, Vat Black 1

C.I. Vat Black 1 (CAS 3687-67-0) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C20H9BrClNO2S and a molecular weight of 442.71300 g/mol. It is also known as 5-bromo-2-(9-chloro-3-oxonaphtho[1,2-b]thien-2(3H)-ylidene)-1,2-dihydro-3H-indol-3-one, (2E)-5-bromo-2-(9-chloro-3-oxobenzo[g][1]benzothiol-2-ylidene)-1H-indol-3-one and 2-(5-Bromo-3-oxo-2,3-dihydro-1H-indol-2-ylidene)-9-chloro-2,3-dihydronaphtho[1,2-b]thiophen-3-one. Key properties include a boiling point of 559.8ºC at 760 mmHg, a density of 1.765g/cm3 and a flash point of 292.3ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

3687-67-0

Jingsj CID

J-52091-7

Molecular Formula

C₂₀H₉BrClNO₂S

Chinese Name

C.I.还原黑1

Molecular Weight

442.71300 g/mol

Category

Organic Compounds

Last updated

8/21/2026