Chemical Product Library / Reference
Direct Red 81 free acid
Chemical identity, technical indicators, performance and application reference. Confirm specifications and regulatory suitability against supplier documentation.
Chemical identity
| English name | Direct Red 81 free acid |
|---|---|
| English synonyms | DIRECT PAPER RED 4BL;Solaminrot 4B free acid;Sirius red 4B free acid;Solaminrot 4B (acid form);Sirius red 4B (acid form);Direct Red 81 (acid form);SCHEMBL8997551;CHEMBL3306477;SCHEMBL16675028;SCHEMBL18220658;IGXZMQCLUNTWCC-UHFFFAOYSA-N;OCHRJJHVPRUZAC-AAKDRMKISA-N |
| Chinese name | 直接红81（游离酸） |
| Chinese synonyms | Not provided |
| Chemical category | Dyes |
| CAS No. | 25188-42-5 |
| EINECS No. | Not provided |
| Molecular formula | C29H21N5O8S2 |
| Molecular weight | 631.6 |
PubChem structure images are reference depictions, not proof of composition, purity, grade, or regulatory status. Mixtures and polymers may not have a single representative structure.
Technical indicators
Not provided
Performance characteristics
XLogP3 4.7; hydrogen-bond donors 4; hydrogen-bond acceptors 12; TPSA 224 A^2; rotatable bonds 8
Application scenarios
Not provided