C.I. Basic yellow 21 (CAS 12270-31-4) — formula C22H25N2.Cl, molecular weight 352.9; category dyes and pigments.
C.I. Basic yellow 21 (CAS 12270-31-4) is a chemical raw material in the dyes and pigments category. Its molecular formula C22H25N2.Cl comprises 22 C, 25 H, 2 N, 1 Cl atoms. Its molecular weight is about 352.9. 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 | 12270-31-4 |
|---|---|
| Molecular Formula | C22H25N2.Cl |
| Molecular Weight | 352.9 |
| Applications | 1H-Indolium, 1-[2-(1, 3-dihydro-1, 3-trimethyl-2H-indol-2-ylidene)ethylidene]-2, 3-dihydro-2-methyl, chloride (1:1): ACTIVE |
| Category | Dyes & Pigments |
Documented applications: 1H-Indolium, 1-[2-(1, 3-dihydro-1, 3-trimethyl-2H-indol-2-ylidene)ethylidene]-2, 3-dihydro-2-methyl, chloride (1:1): ACTIVE.
C.I. Basic yellow 21 is a colorant or pigment compound with CAS registry number 12270-31-4 and molecular formula C22H25N2.Cl (molecular weight 352.9), belonging to the dyes and pigments segment of chemical raw materials.
CAS number: 12270-31-4
Its molecular formula C22H25N2.Cl comprises 22 C, 25 H, 2 N, 1 Cl atoms.
Also known as: C.I. Basic yellow 21 · C.I.碱性黄21
Category: dyes and pigments
The CAS registry number of C.I. Basic yellow 21 is 12270-31-4.
Molecular formula C22H25N2.Cl, molecular weight 352.9.
It is also registered under: C.I. Basic yellow 21, C.I.碱性黄21.
Recorded applications: 1H-Indolium, 1-[2-(1, 3-dihydro-1, 3-trimethyl-2H-indol-2-ylidene)ethylidene]-2, 3-dihydro-2-methyl, chloride (1:1): ACTIVE.
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 C.I. Basic yellow 21 (CAS 12270-31-4), compiled from public chemistry databases.
| CAS Number | 12270-31-4 |
|---|---|
| PubChem CID | 111196 |
| Molecular Formula | C22H25N2.Cl |
| IUPAC Name | 1,3,3-trimethyl-2-[2-(2-methyl-2,3-dihydroindol-1-ium-1-ylidene)ethylidene]indole chloride |
| UNII (FDA) | NS00020104 |
| Molecular Weight | 352.9 |
|---|---|
| Hydrogen Bond Donor Count | 0 |
| Hydrogen Bond Acceptor Count | 2 |
| Rotatable Bond Count | 1 |
| Exact Mass | 352.1706265 |
| Monoisotopic Mass | 352.1706265 |
| Topological Polar Surface Area | 6.3 |
| Heavy Atom Count | 25 |
Basic Yellow 21; EINECS 228-800-7; 2-[2-(2,3-dihydro-2-methyl-1H-indol-1-yl)vinyl]-1,3,3-trimethyl-3H-indolium chloride; RefChem:438779; 2-(2-(2,3-Dihydro-2-methyl-1H-indol-1-yl)vinyl)-1,3,3-trimethyl-3H-indolium chloride; 2-(2-(2,3-Dihydro-2-methyl-1H-indole-1-yl)ethenyl)-1,3,3-trimethyl-3H-indolium, chloride; 228-800-7; 6359-50-8; 1,3,3-trimethyl-2-[2-(2-methyl-2,3-dihydroindol-1-ium-1-ylidene)ethylidene]indole;chloride; C.I.Basic Yellow 21; 12270-31-4; C.I. Basic yellow 21; SCHEMBL9574857; SCHEMBL29465114; DTXSID80884269; DSZCWNRVMXBILR-UHFFFAOYSA-M
| GHS notifications | 25.9% (15 / 58) |
|---|
| GHS notifications | 25.9% (15 / 58) |
|---|---|
| Notified hazard statements | H301 (74.1%), H315 (63.8%), H318 (67.2%), H400 (74.1%), H410 (74.1%) |
Source: PubChem / Wikidata; the batch COA governs where values differ.
Supplier: Jinan Shenghe Chemical Co., Ltd.
中文页面: C.I.碱性黄21