Avobenzone CAS 70356-09-1

Product Name: Avobenzone
CAS: 70356-09-1
MF: C20H22O3
MW: 310.39
Appearance:White or pale yellow crystalline powder
Assay: 95.0~105.0%
Melting point: 81~86℃
Package: 25kg/fiber drum

[Typical Properties]

White or pale yellow crystalline powder.Soluble in chloroform (mild), DMSO (mild), methanol (mild, heated, ultrasonic treated).

[Specification]

Item	Standard
Appearance	White or pale yellow crystalline powder
Identification	A: Infrared Absorption 197 K
	B: Ultraviolet Absorption 197 U Absorptivities at 360 nm do not differ by more than 3.0%.
UV-Specific extinction E (1%/1cm)	Min 1100 at 355 nm
Melting point	81-86℃
Loss on drying	0.5% Max
Assay (GC)	95.0~105.0%
Residual solvents	Methanol:3000 ppm max
Impurities	Individual impurity:3.0% max
	Total impurity:4.5% max

[Usage]

*A kind of phenylketone UV absorber and an important intermediate in organic synthesis.

*Avobezone is a synthetic UV absorber that is a good UV-A (>320nm) type UV absorber, capable of blocking UVA in the entire wavelength range (320-Chemicalbook400nm). It is an efficient broad-spectrum oil soluble UVA filter that, when combined with other UVB sunscreen agents, can provide full UVA and UVB protection for preventing photoinduced skin cancer.

*O/W type mild anionic emulsifier/stabilizer, easy to operate and shape. Suitable for PH3-9 range systems and sun exposure systems

[Storage]

Keep tightly closed.Store in dry and ventilated place.Keep away from fire,heat sources and oxidants.

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