67845-93-6 Usage
Physical properties
It is white to faint yellow powder. The specific gravity is 1.07 at 25℃. It is easy soluble in toluene, chloroform, hexane, soluble in acetone etc.
Uses
Different sources of media describe the Uses of 67845-93-6 differently. You can refer to the following data:
1. The product belongs to the class of hindered hydroxybenzoate light stabilizer. UV-2908 is most suitable for the protection of polyolefins, polycarbonate and the systems containing flame retardants and thioesters. It can be used alone or in combination with benzophenone UV stabilizer or phosphite antioxidant, showing good synergistic effect.The dosage of UV-2908 ranges between 0.25% and 1% are recommended for protection. It depends on the substrate and performance requirement of the final application.
2. DXSORB 2908 is an excellent light stabilizer, low volatility, small coloring, good chemical stability, acid and alkali resistance. Suitable for PP and PE and other polyolefin plastics, the general dosage of 0.25 ~ 0.1%. This product can be used alone or in combination with benzophenone ultraviolet stabilizer or phosphite antioxidant, showing good synergistic effect.
benefits
Low volatility, minimal color contribution, good chemical stability, acid and alkali resistant, excellent compatibilty with UV absorbers, HALS, and thioesters, FDA sanctioned to 0.5% in polyolefins
Flammability and Explosibility
Notclassified
Safety
Different sources of media describe the Safety of 67845-93-6 differently. You can refer to the following data:
1. In accordance with good industrial practice, handle with care and avoid unnecessary personal contact. Avoid continuous or repetitive breathing of dust. UV Absorber 2908 is used only with adequate ventilation. Avoid dust formation and ignition sources.
2. In accordance with good industrial practice, handle with care and avoid unnecessary personal contact. Avoid continuous or repetitive breathing of dust. Use only with adequate ventilation. Avoid dust formation and ignition sources
Synthesis
1.Add 3,5-di-tert-butyl-4-hydroxybenzoic acid (3.03 g), 1-hexadecanol (4.42 g), toluene (30 ml) and dried ion-exchange resin (1.49 g, 20 wt%) into a two-necked round flask equipped with a magnetic stirrer for 11.5 hours.2.High performance liquid chromatography is adopted to monitor the reaction and determine the component of the reaction mixture.
Check Digit Verification of cas no
The CAS Registry Mumber 67845-93-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,7,8,4 and 5 respectively; the second part has 2 digits, 9 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 67845-93:
(7*6)+(6*7)+(5*8)+(4*4)+(3*5)+(2*9)+(1*3)=176
176 % 10 = 6
So 67845-93-6 is a valid CAS Registry Number.
InChI:InChI=1/C31H54O3/c1-8-9-10-11-12-13-14-15-16-17-18-19-20-21-22-34-29(33)25-23-26(30(2,3)4)28(32)27(24-25)31(5,6)7/h23-24,32H,8-22H2,1-7H3