Pigment Red 3 (CAS 2425-85-6) — formula C17H13N3O3, molecular weight 307.30; category dyes and pigments.
Pigment Red 3 (CAS 2425-85-6) is a chemical raw material in the dyes and pigments category. Its molecular formula C17H13N3O3 comprises 17 C, 13 H, 3 N, 3 O atoms. Its molecular weight is about 307.30. Reported physicochemical data: melting point around 518 to 522 °F (NTP, 1992), LogP about 4.8. 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 | 2425-85-6 |
|---|---|
| Molecular Formula | C17H13N3O3 |
| Molecular Weight | 307.30 |
| Melting Point | 518 to 522 °F (NTP, 1992) |
| LogP | 4.8 |
| Applications | Pigment, Cosmetic colorant, paints, inks, plastics, rubber |
| Category | Dyes & Pigments |
Documented applications: Pigment, Cosmetic colorant, paints, inks, plastics, rubber.
Pigment Red 3 is a colorant or pigment compound with CAS registry number 2425-85-6 and molecular formula C17H13N3O3 (molecular weight 307.30), belonging to the dyes and pigments segment of chemical raw materials.
CAS number: 2425-85-6
Its molecular formula C17H13N3O3 comprises 17 C, 13 H, 3 N, 3 O atoms.
Also known as: Pigment Red 3 · 颜料红3 · Toluidine Red
Category: dyes and pigments
The CAS registry number of Pigment Red 3 is 2425-85-6.
Molecular formula C17H13N3O3, molecular weight 307.30.
It is also registered under: Pigment Red 3, 颜料红3, Toluidine Red.
Recorded applications: Pigment, Cosmetic colorant, paints, inks, plastics, rubber.
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 Pigment Red 3 (CAS 2425-85-6), compiled from public chemistry databases.
| CAS Registry Number | 2425-85-6 |
|---|---|
| PubChem CID | 17047 |
| Molecular formula | C17H13N3O3 |
| IUPAC name | 1-[(4-methyl-2-nitrophenyl)diazenyl]naphthalen-2-ol |
| UNII (FDA) | 7K26S08256 |
| Molecular Weight | 307.30 |
|---|---|
| XLogP3 | 4.8 |
| Hydrogen Bond Donor Count | 1 |
| Hydrogen Bond Acceptor Count | 5 |
| Rotatable Bond Count | 2 |
| Exact Mass | 307.09569129 |
| Monoisotopic Mass | 307.09569129 |
| Topological Polar Surface Area | 90.8 |
| Heavy Atom Count | 23 |
| Melting Point | 518 to 522 °F (NTP, 1992) |
|---|---|
| Melting Point | 270 to 272 °C |
| Color Additive Status | 81.30 |
2425-85-6; Toluidine red; Hansa Red B; Helio Red Toner; Siegle Red BB; Permanent Red 4R; Toluidine Red 3B; Fast Red R; Toluidine Toner; Independence Red; Helio Fast Red RN; Chromatex Red J; Toluidine Red R; Deep Fastona Red; Fastona Red B; Silosol Red RN
| Regulatory & Food Contact | CIR / INCI: Cosmetic colorant |
|---|---|
| GHS notification summary | 56.9% (246 / 432) |
| GHS notification summary | 56.9% (246 / 432) |
|---|---|
| Reported hazard statements | H318 (18.8%), H410 (18.8%), H413 (24.1%) |
This chemical does not meet GHS hazard criteria for 56.9% (246 of 432) of all reports.
H318 (18.8%): Causes serious eye damage [Danger Serious eye damage/eye irritation]
Toluidine Red · CAS 2425-85-6 · C17H13N3O3. UNII 7K26S08256. Melting Point: 518 to 522 °F (NTP, 1992); Melting Point: 270 to 272 °C; Color Additive Status: 81.30.
Source: PubChem / Wikidata; the batch COA governs where values differ.
Supplier: Jinan Shenghe Chemical Co., Ltd.
中文页面: 甲苯胺红