Methyl Orange
Also known as: Acid Orange 52, Helianthin, Helianthine B, Orange III, Tropaeolin D, C.I. Acid Orange 52, p-Dimethylaminoazobenzenesulfonic acid sodium salt, Sodium 4-(dimethylamino)azobenzene-4'-sulfonate
Methyl Orange (CAS 547-58-0) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C14H14N3NaO3S and a molecular weight of 327.334 g/mol. Key properties include a melting point of 300 °C, a boiling point of 100ºC, a density of 0.987 g/mL at 25 °C and a flash point of 37 °C. It is classified under GHS with signal word Danger and hazard statements H301 — Toxic if swallowed. It is listed by 1 supplier; request a quote for pricing. Record last updated Aug 21, 2026.
- CAS No.
- 547-58-0
- Jingsj CID
- J-1114778-7
- Molecular Formula
- C14H14N3NaO3S
- Molecular Weight
- 327.334 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 | 300 °C |
|---|---|
| Boiling Point | 100ºC |
| Density | 0.987 g/mL at 25 °C |
| Flash Point | 37 °C |
| Exact Mass | 327.065369 |
| PSA | 93.54000 |
| LogP | 4.15290 |
GHS Safety & Compliance
- H301 — Toxic if swallowed
Activity & Biological Data
| Additional Information | [1]. Ahmad M, et al. Photocatalytic degradation of methyl orange from wastewater using a newly developed Fe-Cu-Zn-ZSM-5 catalyst. Environ Sci Pollut Res Int. 2020;27(21):26239-26248. |
|---|
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 Orange?
The CAS number of Methyl Orange is 547-58-0.
What are the molecular formula and molecular weight of Methyl Orange?
Methyl Orange has molecular formula C14H14N3NaO3S and molecular weight 327.334 g/mol.
Which suppliers offer Methyl Orange?
1 supplier(s) listed; request a quote for pricing.
Is Methyl Orange hazardous?
Methyl Orange has GHS signal word Danger and hazard statements H301 — Toxic if swallowed.
What are the upstream and downstream products of Methyl Orange?
For Methyl Orange, Upstream Products: Sodium 4-aminobenzenesulfonate, N,N-Dimethyl-1,4-benzenediamine, 4,4'-Methylenebis(N,N-dimethylaniline); Downstream Products: Sodium benzenesulfonate, N,N-Dimethylaniline, Dabsyl chloride.
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 Orange (CAS 547-58-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1114778-7 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.