Methyl Red
Also known as: Acid Red 2, C.I. 13020, 2-[4-(Dimethylamino)phenyl]azobenzoic acid, 2-Carboxy-4'-(dimethylamino)azobenzene, 4-Dimethylaminoazobenzene-2'-carboxylic acid, o-Methyl red, p-(Dimethylamino)azobenzene-o-carboxylic acid, 2-[[4-(Dimethylamino)phenyl]diazenyl]benzoic acid
Methyl Red (CAS 493-52-7) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C15H15N3O2 and a molecular weight of 269.298 g/mol. Key properties include a melting point of 178-182ºC, a boiling point of 479.5±30.0 °C at 760 mmHg, a density of 1.2±0.1 g/cm3 and a flash point of 243.8±24.6 °C. It is classified under GHS with signal word Warning and hazard statements H319 — Causes serious eye irritation. It is listed by 1 supplier; request a quote for pricing. Record last updated Aug 21, 2026.
- CAS No.
- 493-52-7
- Jingsj CID
- J-38269-8
- Molecular Formula
- C15H15N3O2
- Molecular Weight
- 269.298 g/mol
- Category
- Organic Compounds
- Last updated
- 8/21/2026
| Supplier | Purity / Pack | Base Price | Unit Price | Origin | |
|---|---|---|---|---|---|
Made to Order | - | - | CN China |
Physicochemical Properties
| Melting Point | 178-182ºC |
|---|---|
| Boiling Point | 479.5±30.0 °C at 760 mmHg |
| Density | 1.2±0.1 g/cm3 |
| Flash Point | 243.8±24.6 °C |
| Exact Mass | 269.116425 |
| PSA | 65.26000 |
| LogP | 4.91 |
| Vapor Pressure | 0.0±1.3 mmHg at 25°C |
| Refractive Index | 1.593 |
| Additional Property | ethanol: soluble1mg/mL |
GHS Safety & Compliance
- H319 — Causes serious eye irritation
Customs & Trade Information
| HS Code | 2927000090 |
|---|---|
| Summary | 2927000090 other diazo-, azo- or azoxy-compounds。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:6.5%。General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of Methyl Red?
The CAS number of Methyl Red is 493-52-7.
What are the molecular formula and molecular weight of Methyl Red?
Methyl Red has molecular formula C15H15N3O2 and molecular weight 269.298 g/mol.
Which suppliers offer Methyl Red?
1 supplier(s) listed; request a quote for pricing.
Is Methyl Red hazardous?
Methyl Red has GHS signal word Warning and hazard statements H319 — Causes serious eye irritation.
What are the upstream and downstream products of Methyl Red?
For Methyl Red, Upstream Products: N,N-Dimethylaniline; Downstream Products: N,N-Dimethyl-1,4-benzenediamine.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Methyl Red (CAS 493-52-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-38269-8 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.