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   ChemNet > CAS > 2440-22-4 2-(2'-Hydroxy-5'-methyl-phenyl)benzotriazole

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2440-22-4 2-(2'-Hydroxy-5'-methyl-phenyl)benzotriazole

product Name 2-(2'-Hydroxy-5'-methyl-phenyl)benzotriazole
CAS No 2440-22-4;2240-22-4
Synonyms 2-(2-Benzotriazolyl)-p-cresol; UV-P; 2-(2-Benzotriazolyl)-4-methylphenol; 2-(2-Hydroxy-5-methyl-phenyl)benzotriazole; Drometrizole; Benazol P; Tinuvin P; PrimesorbP; Ultraviolet absorber UV-P; UV absorber-P; UV absorber UV-P; 2H-benzotriazole; 2-(2H-benzotriazol-2-yl)-4-methylphenol; 4-methyl-2-(7,8,9-triazatricyclo[4.3.0.07,9]nona-1,3,5-trien-8-yl)phenol; 2-(2H-Benzotriazol-2-yl)-p-cresol; Ultraviolet absorbent UV-P; UV P; Ultraviolet  light  absorber  UV-P; UV Abosorber UV-P
Molecular Formula C13H11N3O
Molecular Weight 225.2459
InChI InChI=1/C13H11N3O/c1-9-6-7-13(17)12(8-9)16-14-10-4-2-3-5-11(10)15(14)16/h2-8,17H,1H3
EINECS 219-470-5
Molecular Structure 2440-22-4;2240-22-4 2-(2'-Hydroxy-5'-methyl-phenyl)benzotriazole
Density 1.43g/cm3
Melting point 128-132℃
Boiling point 402.2°C at 760 mmHg
Refractive index 1.765
Flash point 197°C
Vapour Pressur 4.81E-07mmHg at 25°C
Safety Description S22:;
S24/25:;

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Description

CAS No. [2440-22-4]
Chemical name: 2-(2-hydroxy-5-methylphenyl)benzotriazole
Molecular formula: C13H11N3O
Molecular weight: 225.3
Specification:
Appearance: white to light yellow powder
Assay: 99% min.
Melting point: 128.0-132.0°C
Loss on drying: 0.5% max.
Ash: 0.1% max.
Transmittance:
at 440nm: 97% min.
at 500nm: 98% min.
Packing: 20/25kg fiber drum
Usage:
As the ultraviolet absorption agent, it is available to polyester, epoxy, cellulose acetate, PVC, polystyrene, plexiglass and polyacrylonitrile resin etc. The maximum absorbing wavelength range is 270-380nm.

Molecular structure:
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Description a) Appearance: white to yellowish crystal
b) Melting Point: 128~132¡ãC
c) Content(HPLC): 99%Min.
d) Transmittance: 440nm¡Ý97% 500nm¡Ý98%
e)Ash: 0.1% Max.
f) Volatiles:0.5%Max.
UV-P is a benzotriazole type UV absorber. It has a high absorption in the wavelength of 270-340nm. It is also efficient for the light stabilization of polyvinyl chloride, unsaturated polyurethane, polystyrene,coatings and lacquers.
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