Pigment Red 81 (CAS 12224-98-5) — formula C28H31N2O3+, molecular weight 443.6; category dyes and pigments.
Pigment Red 81 (CAS 12224-98-5) is a chemical raw material in the dyes and pigments category. Its molecular formula C28H31N2O3+ comprises 28 C, 31 H, 2 N, 3 O atoms. Its molecular weight is about 443.6. Reported physicochemical data: LogP about 5.1. 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 | 12224-98-5 |
|---|---|
| Molecular Formula | C28H31N2O3+ |
| Molecular Weight | 443.6 |
| LogP | 5.1 |
| Applications | It is often used as a tracer dye within water to determine the rate and direction of flow and transport. Rhodamine dyes fluoresce and can thus be detected easily and inexpensively with instruments called fluorometers. Rhodamine dyes are used extensively in biotechnology applications such as fluorescence microscopy, flow cytometry, fluorescence correlation spectroscopy and ELISA, U.S. Production: 2021: 21, 830 lb, 2020: 71 |
| Category | Dyes & Pigments |
Documented applications: It is often used as a tracer dye within water to determine the rate and direction of flow and transport. Rhodamine dyes fluoresce and can thus be detected easily and inexpensively with instruments called fluorometers. Rhodamine dyes are used extensively in biotechnology applications such as fluorescence microscopy, flow cytometry, fluorescence correlation spectroscopy and ELISA, U.S. Production: 2021: 21, 830 lb, 2020: 71.
Pigment Red 81 is a colorant or pigment compound with CAS registry number 12224-98-5 and molecular formula C28H31N2O3+ (molecular weight 443.6), belonging to the dyes and pigments segment of chemical raw materials.
CAS number: 12224-98-5
Its molecular formula C28H31N2O3+ comprises 28 C, 31 H, 2 N, 3 O atoms.
Also known as: Pigment Red 81 · 颜料红81
Category: dyes and pigments
The CAS registry number of Pigment Red 81 is 12224-98-5.
Molecular formula C28H31N2O3+, molecular weight 443.6.
It is also registered under: Pigment Red 81, 颜料红81.
Recorded applications: It is often used as a tracer dye within water to determine the rate and direction of flow and transport. Rhodamine dyes fluoresce and can thus be detected easily and inexpensively with instruments called fluorometers. Rhodamine dyes are used extensively in biotechnology applications such as fluorescence microscopy, flow cytometry, fluorescence correlation spectroscopy and ELISA, U.S. Production: 2021: 21, 830 lb, 2020: 71.
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 81 (CAS 12224-98-5), compiled from public chemistry databases.
| CAS Registry Number | 12224-98-5 |
|---|---|
| PubChem CID | 65211 |
| Molecular formula | C28H31N2O3+ |
| IUPAC name | [9-(2-ethoxycarbonylphenyl)-6-(ethylamino)-2,7-dimethylxanthen-3-ylidene]-ethylazanium |
| UNII (FDA) | 923TYK19HG |
| Molecular Weight | 443.6 |
|---|---|
| XLogP3 | 5.1 |
| Hydrogen Bond Donor Count | 2 |
| Hydrogen Bond Acceptor Count | 4 |
| Rotatable Bond Count | 7 |
| Exact Mass | 443.23346786 |
| Monoisotopic Mass | 443.23346786 |
| Topological Polar Surface Area | 61.5 |
| Heavy Atom Count | 33 |
| Solubility | 1 to 5 mg/mL at 65.3 °F (NTP, 1992) |
|---|
rhodamine 6G cation; 12224-98-5; 47724-48-1; [9-(2-ethoxycarbonylphenyl)-6-(ethylamino)-2,7-dimethylxanthen-3-ylidene]-ethylazanium; 63022-06-0; 923TYK19HG; 9-(2-(Ethoxycarbonyl)phenyl)-3,6-bis(ethylamino)-2,7-dimethylxanthylium; Xanthylium, 9-(2-(ethoxycarbonyl)phenyl)-3,6-bis(ethylamino)-2,7-dimethyl-, molybdatesilicate; 63022-07-1; Xanthylium, 9-[2-(ethoxycarbonyl)phenyl]-3,6-bis(ethylamino)-2,7-dimethyl-, molybdatesilicate; Xanthylium, 9-(2-(ethoxycarbonyl)phenyl)-3,6-bis(ethylamino)-2,7-dimethyl-, molybdatephosphate; Xanthylium, 9-[2-(ethoxycarbonyl)phenyl]-3,6-bis(ethylamino)-2,7-dimethyl-, molybdatephosphate; rhodamine 6G(1+); EINECS 263-793-4; UNII-923TYK19HG; CCRIS 6093
| GHS notification summary | 70% (140 / 200) |
|---|
| GHS notification summary | 70% (140 / 200) |
|---|---|
| Reported hazard statements | H318 (21%), H400 (28.5%), H410 (30%) |
This chemical does not meet GHS hazard criteria for 70% (140 of 200) of all reports.
H318 (21%): Causes serious eye damage [Danger Serious eye damage/eye irritation]
Pigment Red 81 · CAS 12224-98-5 · C28H31N2O3+. UNII 923TYK19HG. Solubility: 1 to 5 mg/mL at 65.3 °F (NTP, 1992).
Source: PubChem / Wikidata; the batch COA governs where values differ.
Supplier: Jinan Shenghe Chemical Co., Ltd.
中文页面: 颜料红81