荧光增白剂OB-1，CAS 登记号 1533-45-5，由济南圣和化工有限公司现货供应，可提供纯度 按批次COA提供(不公开发布) 的规格，下游主要用于染料及颜料。支持样品与小批量试用，批量价格请联系我们获取，验收以批次 COA 为准。
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Optical Brightener OB-1 · CAS 1533-45-5 · C28H18N2O2. UNII C28H18N2O2.
| CAS Registry Number | 1533-45-5 |
|---|---|
| PubChem CID | 73744 |
| Molecular formula | C28H18N2O2 |
| IUPAC name | 2-[4-[2-[4-(1,3-benzoxazol-2-yl)phenyl]ethenyl]phenyl]-1,3-benzoxazole |
| UNII (FDA) | C28H18N2O2 |
| Molecular Weight | 414.5 |
|---|---|
| XLogP3 | 7.2 |
| Hydrogen Bond Donor Count | 0 |
| Hydrogen Bond Acceptor Count | 4 |
| Rotatable Bond Count | 4 |
| Exact Mass | 414.136827821 |
| Monoisotopic Mass | 414.136827821 |
| Topological Polar Surface Area | 52.1 |
| Heavy Atom Count | 32 |
| Formal Charge | 0 |
| Regulatory & Food Contact | FDA Cumulative Estimated Daily Intake (CEDI): FCS FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS 2,2'-(1,2-ETHENEDIYLDI-4,1-PHENYLENE)BIS(BENZOXAZOLE) 2,2'-(1,2-ETHENEDIYLDI-4,1-PHENYLENE) BIS(BENZOXAZOLE) |
|---|---|
| GHS notification summary | 44.6% (145 / 325) |
| GHS notification summary | 44.6% (145 / 325) |
|---|---|
| Reported hazard statements | H315 (14.2%), H319 (14.2%), H335 (13.2%), H411 (37.2%) |
This chemical does not meet GHS hazard criteria for 44.6% (145 of 325) of reports.
H315 (14.2%): Causes skin irritation [Warning Skin corrosion/irritation]
1533-45-5; 4,4'-Bis(2-benzoxazolyl)stilbene; DTXSID4051744; Benzoxazole, 2,2'-(1,2-ethenediyldi-4,1-phenylene)bis-; RefChem:506551; DTXCID0030299; 1,2-Bis(4-(benzo[d]oxazol-2-yl)phenyl)ethene; C28H18N2O2; Fluorescent brightener OB-1; OPTICAL BRIGHTENER 1; DTXSID10892019; CS-W011665; AC-10112; 4,4'-Bis(1,3-benzoxazol-2-yl)stilbene; 4,4'-BIS(2-BENZOXAZOLYL)STILBENE, TRANS-; Q27251389
CAS 1533-45-5; molecular formula C28H18N2O2; molecular weight — g/mol.
1533-45-5, 4,4'-Bis(2-benzoxazolyl)stilbene, DTXSID4051744, Benzoxazole, 2,2'-(1,2-ethenediyldi-4,1-phenylene)bis-, RefChem:506551, DTXCID0030299.
Documented regulatory listings: FDA Cumulative Estimated Daily Intake (CEDI): FCS; FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS; 2,2'-(1,2-ETHENEDIYLDI-4,1-PHENYLENE)BIS(BENZOXAZOLE).
44.6% of GHS notifications report no hazard classification (145 of 325).
Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.