Reactive Black 5
活性黑5
Also known as: C.I. 20505, C.I. Reactive Black 5, Remazol Black B, Remazol Black GR, Reactive Black KN-B, EINECS 241-164-5, MFCD00013464, tetrasodium 4-amino-5-hydroxy-3,6-bis[[4-(2-sulfonatooxyethylsulfonyl)phenyl]azo]naphthalene-2,7-disulfonate
Reactive Black 5 (CAS 17095-24-8) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C26H21N5Na4O19S6 and a molecular weight of 991.81600 g/mol. It is also known as C.I. 20505, C.I. Reactive Black 5 and Remazol Black B. Key properties include a melting point of 300ºC and a density of 1.21 g/cm3 at 20 °C. GHS signal word: Danger. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 17095-24-8
- Jingsj CID
- J-1340760-1
- Molecular Formula
- C26H21N5Na4O19S6
- Chinese Name
- 活性黑5
- Molecular Weight
- 991.81600 g/mol
- Category
- Organic Compounds
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 300ºC |
|---|---|
| Density | 1.21 g/cm3 at 20 °C |
GHS Safety & Compliance
Frequently Asked Questions
What is the CAS number of Reactive Black 5?
The CAS number of Reactive Black 5 is 17095-24-8.
What are the molecular formula and molecular weight of Reactive Black 5?
Reactive Black 5 has molecular formula C26H21N5Na4O19S6 and molecular weight 991.81600 g/mol.
Is Reactive Black 5 hazardous?
Reactive Black 5 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. "Reactive Black 5 (CAS 17095-24-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1340760-1 (accessed 2026-10-25).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.