Direct Black 38
直接黑38
Also known as: Chlorazol Black E, Azo Black, C.I. Direct Black 38, C.I. 30235, Erie Black, Pontamine Black E
Direct Black 38 (CAS 1937-37-7) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C34H25N9Na2O7S2 and a molecular weight of 781.728 g/mol. It is also known as Chlorazol Black E, Azo Black and C.I. Direct Black 38. Key properties include a melting point of 109-110°C and a density of 1.61g/cm3. GHS signal word: Danger. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 1937-37-7
- Jingsj CID
- J-3543-5
- Molecular Formula
- C34H25N9Na2O7S2
- Chinese Name
- 直接黑38
- Molecular Weight
- 781.728 g/mol
- Category
- Organic Compounds
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 109-110°C |
|---|---|
| Density | 1.61g/cm3 |
GHS Safety & Compliance
Frequently Asked Questions
What is the CAS number of Direct Black 38?
The CAS number of Direct Black 38 is 1937-37-7.
What are the molecular formula and molecular weight of Direct Black 38?
Direct Black 38 has molecular formula C34H25N9Na2O7S2 and molecular weight 781.728 g/mol.
Is Direct Black 38 hazardous?
Direct Black 38 has GHS signal word Danger.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Direct Black 38 (CAS 1937-37-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-3543-5 (accessed 2026-10-23).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.