Optical Brightener OB-1 (CAS 1533-45-5) — formula C28H18N2O2, molecular weight 414.5; category dyes and pigments.
Optical Brightener OB-1 (CAS 1533-45-5) is a chemical raw material in the dyes and pigments category. Its molecular formula C28H18N2O2 comprises 28 C, 18 H, 2 N, 2 O atoms. Its molecular weight is about 414.5. Reported physicochemical data: LogP about 7.2. 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 | 1533-45-5 |
|---|---|
| Molecular Formula | C28H18N2O2 |
| Molecular Weight | 414.5 |
| LogP | 7.2 |
| Applications | Antioxidant, Brightener, U.S. Production: 2023: <25, 000 lb, 2022: 25, 000 - <50 |
| Category | Dyes & Pigments |
Documented applications: Antioxidant, Brightener, U.S. Production: 2023: <25, 000 lb, 2022: 25, 000 - <50.
Optical Brightener OB-1 is a colorant or pigment compound with CAS registry number 1533-45-5 and molecular formula C28H18N2O2 (molecular weight 414.5), belonging to the dyes and pigments segment of chemical raw materials.
CAS number: 1533-45-5
Its molecular formula C28H18N2O2 comprises 28 C, 18 H, 2 N, 2 O atoms.
Also known as: Optical Brightener OB-1 · 荧光增白剂OB-1
Category: dyes and pigments
The CAS registry number of Optical Brightener OB-1 is 1533-45-5.
Molecular formula C28H18N2O2, molecular weight 414.5.
It is also registered under: Optical Brightener OB-1, 荧光增白剂OB-1.
Recorded applications: Antioxidant, Brightener, U.S. Production: 2023: <25, 000 lb, 2022: 25, 000 - <50.
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 Optical Brightener OB-1 (CAS 1533-45-5), compiled from public chemistry databases.
| 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 |
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
| 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]
Optical Brightener OB-1 · CAS 1533-45-5 · C28H18N2O2. UNII C28H18N2O2.
Source: PubChem / Wikidata; the batch COA governs where values differ.
Supplier: Jinan Shenghe Chemical Co., Ltd.
中文页面: 荧光增白剂OB-1