Chromotropic acid
变色酸
Also known as: 1,8-Dihydroxynaphthalene-3,6-disulfonic acid, 4,5-Dihydroxy-2,7-naphthalenedisulfonic acid, 4,5-Dihydroxynaphthalene-2,7-disulfonic acid, 1,8-Dihydroxynaphthylene-3,6-disulfonic acid
Chromotropic acid (CAS 148-25-4) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C10H8O8S2 and a molecular weight of 320.296 g/mol. It is also known as 1,8-Dihydroxynaphthalene-3,6-disulfonic acid, 4,5-Dihydroxy-2,7-naphthalenedisulfonic acid and 4,5-Dihydroxynaphthalene-2,7-disulfonic acid. Key property: a density of 1.9±0.1 g/cm3. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 148-25-4
- Jingsj CID
- J-26798-2
- Molecular Formula
- C10H8O8S2
- Chinese Name
- 变色酸
- Molecular Weight
- 320.296 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Density | 1.9±0.1 g/cm3 |
|---|---|
| Exact Mass | 319.966064 |
| PSA | 165.96000 |
| LogP | -3.86 |
| Refractive Index | 1.757 |
Customs & Trade Information
| HS Code | 2908999090 |
|---|---|
| Summary | 2908999090 halogenated, sulphonated, nitrated or nitrosated derivatives of phenols or phenol-alcohols。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:5.5%。General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of Chromotropic acid?
The CAS number of Chromotropic acid is 148-25-4.
What are the molecular formula and molecular weight of Chromotropic acid?
Chromotropic acid has molecular formula C10H8O8S2 and molecular weight 320.296 g/mol.
What are the upstream and downstream products of Chromotropic acid?
For Chromotropic acid, Upstream Products: 1-Amino-8-hydroxynaphthalene-3,6-disulphonic acid, 8-hydroxynaphthalene-1,3,6-trisulfonic acid; Downstream Products: Acid Violet 3, Arsenazo III, 4,5-Dihydroxy-3-(1-naphthalenylazo)-2,7-naphthalenedisulfonic acid.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Chromotropic acid (CAS 148-25-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-26798-2 (accessed 2026-10-28).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.