- CYASORB UV-3638
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- $0.00 / 1kg
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2025-09-10
- CAS:18600-59-4
- Min. Order: 1kg
- Purity: 99.4%
- Supply Ability: 1000kg
- CYASORB UV-3638
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- $0.00 / 25KG
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2025-08-08
- CAS:18600-59-4
- Min. Order: 1KG
- Purity: 99%
- Supply Ability: 50000KG/month
- CYASORB UV-3638
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- $0.00 / 1KG
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2025-06-24
- CAS:18600-59-4
- Min. Order: 1KG
- Purity: 99%
- Supply Ability: 10 mt
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| | CYASORB UV-3638 Basic information |
| Product Name: | CYASORB UV-3638 | | Synonyms: | 2,2'-(1,4-PHENYLENE)BIS-4H-3,1-BENZOXAZIN-4-ONE 18600-59-4 UV-3638;18600-59-4 UV-3638 2,2'-Benzene-1,4-diylbis(4H-3,1-benzoxazin-4-one);Cyasorb UV-3638 2,2'-(1,4-PHENYLENE)BIS-4H-3,1-BENZOXAZIN-4-ONE;-(1,4-PHENYLENE)BIS-4H-3,1-BENZOXAZIN-4-ONE;2-[4-(4-oxo-3,1-benzoxazin-2-yl)phenyl]-3,1-benzoxazin-4-one;1-Benzoxazin-4-one,2,2’-(1,4-phenylene)bis-4H-3;2,2′-(p-Phenylen)di-3,1-benzoxazin;2,2''-P-PHENYLENEBIS-4H-3,1-BENZOXAZIN-4-ONE | | CAS: | 18600-59-4 | | MF: | C22H12N2O4 | | MW: | 368.34 | | EINECS: | 418-280-1 | | Product Categories: | | | Mol File: | 18600-59-4.mol |  |
| | CYASORB UV-3638 Chemical Properties |
| Melting point | 315-317 °C | | Boiling point | 522.8±20.0 °C(Predicted) | | density | 1.41±0.1 g/cm3(Predicted) | | vapor pressure | 0-0Pa at 20-25℃ | | storage temp. | 2-8°C | | pka | 1.98±0.20(Predicted) | | form | powder to crystal | | color | White to Orange to Green | | Water Solubility | 112μg/L at 20℃ | | InChI | InChI=1S/C22H12N2O4/c25-21-15-5-1-3-7-17(15)23-19(27-21)13-9-11-14(12-10-13)20-24-18-8-4-2-6-16(18)22(26)28-20/h1-12H | | InChIKey | BBITXNWQALLODC-UHFFFAOYSA-N | | SMILES | C1(C2OC(=O)C3=CC=CC=C3N=2)=CC=C(C2OC(=O)C3=CC=CC=C3N=2)C=C1 | | LogP | 4.7 at 22℃ | | CAS DataBase Reference | 18600-59-4(CAS DataBase Reference) | | EPA Substance Registry System | 4H-3,1-Benzoxazin-4-one, 2,2'-(1,4-phenylene)bis- (18600-59-4) |
| Hazard Codes | Xi | | Risk Statements | 43-53 | | Safety Statements | 24-37-61 | | HS Code | 2934.99.4400 |
| | CYASORB UV-3638 Usage And Synthesis |
| Description | CYASORB UV-3638 is a highly efficient and non-staining UV absorber, which is distinguishied by its superiorly low volatility, and its strong & broad range of UV light absorption together with no color contribution & excellent stabilization for polymers. White UV-3638 is designed to meet the demanding high temperature requirements for processing engineering plastics such as Nylon, PC,PET,PBT and PPO. UV-3638 is also highly effective in other poymers such as polyamides, polyacetals, polyolefins fibers, styrenics, elastomers where long term permanet UV light stability is required. | | Chemical Properties | white to off-white crystalline powder. | | Uses | Cyasorb 3638 offers very strong and broad UV absorption with no color contribution. Possesses very good stabilization for polyesters(PET) and polycarbonates(PC).3638 is based on a benzoxaxinone structure which delivers a short-term heat stability up to 350 °C and a long term heat stability up to 160 °C.
UV 3638 is ideal for film/sheet/plate applications such as solar cell, window film, etc. | | Application | UV-3638 can be readily incorporated in the polymers within the dosage range of 0.1-10% by weight through conventional techniquire such as powder, solution, or melt blending(e.g. extrusion compounding). It can be used alone or in a variety of blends and combinations with antioxidants, phosphites and other light stabilizers where often a synergistic performance is observed. Basically, the dosage level for UV-3638 can be expectd to be 1/3 of the exsited benzotriazole type UV absorbers with the nearly same efficency of UV screenning.
Engineering plastics (Nylone/plycarbonate/PET/PBT/PPO/PPS..etc)
Because of it's superior heat resistance, so its volatility is extremely low during the processing of engineering plastics at temperatures above 300°C. Also, it offering a very strong & broad UV absorption with no color contribution and exllent stabilzation. so it will allow the recycling or reworking of scrap without significant lowss of the UV light stability. UV-3638 meets the stringent requirement of applications where light transmission and optical properties are critical.
Other polymers
Because of its high absorptivity in the range of 300-360nm, plus its extremely low volatility, assures maximal resistance to UV light degradation even during long term indoor and out door exposure. |
| | CYASORB UV-3638 Preparation Products And Raw materials |
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