Cresol Red (CAS 1733-12-6) — formula C21H18O5S, molecular weight 382.4; category organic chemicals.
Cresol Red (CAS 1733-12-6) is a chemical raw material in the organic chemicals category. Its molecular formula C21H18O5S comprises 21 C, 18 H, 5 O, 1 S atoms. Its molecular weight is about 382.4. Reported physicochemical data: LogP about 3.7. 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 | 1733-12-6 |
|---|---|
| Molecular Formula | C21H18O5S |
| Molecular Weight | 382.4 |
| LogP | 3.7 |
| Applications | acid-base indicator, Color changes to red-yellow (pH 0.5-2.5) and orange-purple (pH 6.5-8.5), Phenol, 4'-(1, 1-dioxido-3H-2, 1-benzoxathiol-3-ylidene)bis[2-methyl-: ACTIVE |
| Category | Organic Chemicals |
Documented applications: acid-base indicator, Color changes to red-yellow (pH 0.5-2.5) and orange-purple (pH 6.5-8.5), Phenol, 4'-(1, 1-dioxido-3H-2, 1-benzoxathiol-3-ylidene)bis[2-methyl-: ACTIVE.
Cresol Red is a carbon-based organic compound with CAS registry number 1733-12-6 and molecular formula C21H18O5S (molecular weight 382.4), belonging to the organic chemicals segment of chemical raw materials.
CAS number: 1733-12-6
Its molecular formula C21H18O5S comprises 21 C, 18 H, 5 O, 1 S atoms.
Also known as: Cresol Red · 甲酚红
Category: organic chemicals
The CAS registry number of Cresol Red is 1733-12-6.
Molecular formula C21H18O5S, molecular weight 382.4.
It is also registered under: Cresol Red, 甲酚红.
Recorded applications: acid-base indicator, Color changes to red-yellow (pH 0.5-2.5) and orange-purple (pH 6.5-8.5), Phenol, 4'-(1, 1-dioxido-3H-2, 1-benzoxathiol-3-ylidene)bis[2-methyl-: ACTIVE.
Category: Organic Chemicals.
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 Cresol Red (CAS 1733-12-6), compiled from public chemistry databases.
| CAS Registry Number | 1733-12-6 |
|---|---|
| PubChem CID | 73013 |
| Molecular formula | C21H18O5S |
| IUPAC name | 4-[3-(4-hydroxy-3-methylphenyl)-1,1-dioxo-2,1λ6-benzoxathiol-3-yl]-2-methylphenol |
| UNII (FDA) | 839K2R4B8K |
| Molecular Weight | 382.4 |
|---|---|
| XLogP3 | 3.7 |
| Hydrogen Bond Donor Count | 2 |
| Hydrogen Bond Acceptor Count | 5 |
| Rotatable Bond Count | 2 |
| Exact Mass | 382.08749484 |
| Monoisotopic Mass | 382.08749484 |
| Topological Polar Surface Area | 92.2 |
| Heavy Atom Count | 27 |
Cresol red; 1733-12-6; o-Cresolsulfonphthalein; o-Cresol Red; Cresolsulfophthalein; o-Cresolsulfonephthalein; Phenol, 4,4'-(1,1-dioxido-3H-2,1-benzoxathiol-3-ylidene)bis[2-methyl-; 3',3''-Dimethylphenolsulfonephthalein; NSC 7224; NSC-7224; 839K2R4B8K; DTXSID8061929; CHEBI:86218; Phenol, 4,4'-(1,1-dioxido-3H-2,1-benzoxathiol-3-ylidene)bis(2-methyl-; RefChem:579417; DTXCID5035531
| GHS notification summary | 6.5% (3 / 46) |
|---|
| GHS notification summary | 6.5% (3 / 46) |
|---|---|
| Reported hazard statements | H315 (91.3%), H319 (91.3%), H335 (91.3%) |
This chemical does not meet GHS hazard criteria for 6.5% (3 of 46) of reports.
H315 (91.3%): Causes skin irritation [Warning Skin corrosion/irritation]
Cresol Red · CAS 1733-12-6 · C21H18O5S. UNII 839K2R4B8K.
Source: PubChem / Wikidata; the batch COA governs where values differ.
Supplier: Jinan Shenghe Chemical Co., Ltd.
中文页面: 甲酚红