Acid Orange 3 (CAS 6373-74-6) — formula C18H13N4NaO7S, molecular weight 452.4; category dyes and pigments.
Acid Orange 3 (CAS 6373-74-6) is a chemical raw material in the dyes and pigments category. Its molecular formula C18H13N4NaO7S comprises 18 C, 13 H, 4 N, 1 Na, 7 O, 1 S atoms. Its molecular weight is about 452.4. Reported physicochemical data: melting point around 399 to 403 °F (NTP, 1992). As a sourcing and distribution partner we help locate and compare this item across domestic and cross-border channels, arranging samples and batch orders with full COA and compliance files.
| CAS Number | 6373-74-6 |
|---|---|
| Molecular Formula | C18H13N4NaO7S |
| Molecular Weight | 452.4 |
| Melting Point | 399 to 403 °F (NTP, 1992) |
| Applications | Hair dyeing, Used to dye wool, nylon, silk, acetate, and leather |
| Category | Dyes & Pigments |
Documented applications: Hair dyeing, Used to dye wool, nylon, silk, acetate, and leather.
Acid Orange 3 is a colorant or pigment compound with CAS registry number 6373-74-6 and molecular formula C18H13N4NaO7S (molecular weight 452.4), belonging to the dyes and pigments segment of chemical raw materials.
CAS number: 6373-74-6
Its molecular formula C18H13N4NaO7S comprises 18 C, 13 H, 4 N, 1 Na, 7 O, 1 S atoms.
Also known as: Acid Orange 3 · 黄EA · yellow ea
Category: dyes and pigments
The CAS registry number of Acid Orange 3 is 6373-74-6.
Molecular formula C18H13N4NaO7S, molecular weight 452.4.
It is also registered under: Acid Orange 3, 黄EA, yellow ea.
Recorded applications: Hair dyeing, Used to dye wool, nylon, silk, acetate, and leather.
Category: Dyes & Pigments.
Packaging is agreed per order, from lab-scale packs to bulk, and confirmed with each order rather than fixed on the page. A Certificate of Analysis (COA) ships with every batch and MSDS is available; where the end use carries a regulatory limit (food contact, pharmaceutical or cosmetic), state the standard at enquiry and the grade is set against it.
Independent reference data for Acid Orange 3 (CAS 6373-74-6), compiled from public chemistry databases.
| CAS Registry Number | 6373-74-6 |
|---|---|
| PubChem CID | 5284435 |
| Molecular formula | C18H13N4NaO7S |
| IUPAC name | sodium 2-anilino-5-(2,4-dinitroanilino)benzenesulfonate |
| UNII (FDA) | P0XV7XM57J |
| Molecular Weight | 452.4 |
|---|---|
| Hydrogen Bond Donor Count | 2 |
| Hydrogen Bond Acceptor Count | 9 |
| Rotatable Bond Count | 4 |
| Exact Mass | 452.04026422 |
| Monoisotopic Mass | 452.04026422 |
| Topological Polar Surface Area | 181 |
| Heavy Atom Count | 31 |
| Melting Point | 399 to 403 °F (NTP, 1992) |
|---|---|
| Solubility | 1 to 10 mg/mL at 77 °F (NTP, 1992) |
Acid Orange 3; C.I. Acid Orange 3; 6373-74-6; Amido yellow EA; Amido Yellow E; Acid Yellow E; Airedale Yellow E; CI 10385; DTXSID1021081; Sodium 2-anilino-5-(2,4-dinitroanilino)benzenesulphonate; P0XV7XM57J; sodium;2-anilino-5-(2,4-dinitroanilino)benzenesulfonate; Acid Orange 3, Technical Grade; Benzenesulfonic acid, 5-((2,4-dinitrophenyl)amino)-2-(phenylamino)-, monosodium salt; Derma Yellow P; Fenalan Yellow E
| Regulatory & Food Contact | CIR / INCI: Cosmetic ingredients (Acid Orange 3) -> CIR (Cosmetic Ingredient Review) CIR / INCI: Hair dyeing |
|---|---|
| GHS notification summary | 22.1% (49 / 222) |
| GHS notification summary | 22.1% (49 / 222) |
|---|---|
| Reported hazard statements | H315 (13.1%), H317 (42.8%), H318 (17.1%), H319 (18%), H335 (13.1%) |
This chemical does not meet GHS hazard criteria for 22.1% (49 of 222) of reports.
H315 (13.1%): Causes skin irritation [Warning Skin corrosion/irritation]
yellow ea · CAS 6373-74-6 · C18H13N4NaO7S. UNII P0XV7XM57J. Melting Point: 399 to 403 °F (NTP, 1992); Solubility: 1 to 10 mg/mL at 77 °F (NTP, 1992).
Source: PubChem / Wikidata; the batch COA governs where values differ.
Supplier: Jinan Shenghe Chemical Co., Ltd.
中文页面: 酸性橙3