UV-329

Plastic additive-UV absorbent & light stabilizer

Product name：UV-P

It is high-efficient UV absorbent to absorb UV between270-340 nm, used in poly, polystyrene, polyester, polycarbonate, Perspex, polyethylene, ABS resin, epoxy resin and cellulose resin. It almost absorb no visible light, being especially fit for colorless transparent and pale colored products. It can be used in plastic products for food.

Structure:

Molecular weight:225
CAS NO: 2440-22-4
Appearance: Slightly yellow powder or crytallines
Melting point: 128-132℃
Purity: ≥99%(GC)
Light transmittance: 440nm,≥98% 500nm,≥99%
LD50:≥5000mg/kg
Packing: 1kg,5kg,25kg,50kg.

UV—329（5411）

Chemical name：2-(2’-Hydroxy-5’-tert-octylphenyl) benzotriazole

Molecular formula	C₂₀H₂₅H₃O
M.W.	323
CAS#	3147-75-9

Introduction：

UV—329 is an ultraviolet light absorber of benzotriazole class. It can be used in polystrene, polyester, polycarbonate, ABS resin etc.

UV—329，has good cooperative effect when used with anti-oxidant. It has low

volatility during high processing temperature, and has very high stability.

UV-329 exhibits strong a absorber in the 300-400nm region. The absorption maxim at

301-343nm.

Physical Properties：

Appearance

White powder

Assay

≥99%（GC）

Melting range

103—106℃

Specific gravity

1.18g/cm³( at 20℃)

Light

Transmittance

440nm≥98%

500nm≥99%

LD₅₀：

5000mg/kg

Volatile matter

≤0.3%

Solubility：（at 20℃g/100ml solvent）

Water

＜0.01

Ethyl acetate

15

Benzene

32

n-hexane

6

Methylene chloride

38

Styrene

7

Cyclohexane

15

Ethanol

0.6

DOP：

2

Styrene

33

Chloroform

37

Methanol

0.6

Use level ：( For reference )

PET:0.2-3%

ABS resin:0.25-0.75%

Polyolefin:0.2-0.5%

Rigid PVC:0.25-1.0%

P C:0.1-1.0%

MMA:0.1-1.0%

Safety：UV—329 can be safety handled without any irritation caused to skin.

Package: Net 25kgs, fiber drum with PE inside or per customer’s

Storage：UV—329 should be storage in a closed system and be kept in a dry

dark place. Without any light exposure

Appearance	White powder	Assay	≥99%（GC）
Melting range	103—106℃	Specific gravity	1.18g/cm³( at 20℃)
Light Transmittance	440nm≥98% 500nm≥99%	LD₅₀：	5000mg/kg
Light Transmittance	440nm≥98% 500nm≥99%	Volatile matter	≤0.3%

Water	＜0.01	Ethyl acetate	15	Benzene	32
n-hexane	6	Methylene chloride	38	Styrene	7
Cyclohexane	15	Ethanol	0.6	DOP：	2
Styrene	33	Chloroform	37	Methanol	0.6

PET:0.2-3%	ABS resin:0.25-0.75%	Polyolefin:0.2-0.5%
Rigid PVC:0.25-1.0%	P C:0.1-1.0%	MMA:0.1-1.0%