LeSORB – UV P
Technical Data Sheet
Chemical name: 2-(2′-Hydroxy-5′-methylphenyl) benzotriazole
Formula: C13H11N30
CAS NO.: 2440-22-4
Molecular Weight: 225
Chemical Structure :
Application & Introduction
- PVC
- PC
- ABS resin
- AS resin
- PP
- PS
- PE
- PMMA
LeSORB® UV P is a benzotriazole type ultraviolet light absorber (UVA), imparting good light stability for plastics and other organic polymers. It protects polymers as well as organic pigments from UV radiation helping to preserve the original appearance and physical integrity of engineered plastics, elastomers, PVC, adhesives, and polyurethanes during outdoor weathering.
Physical Properties :
| Item | Standard |
| Appearance | Slight yellow powder |
| Assay (HPLC) | ≥99% |
| Melting Point | 128-133 °C |
| Loss On Drying | ≤0.5% |
| Ash | ≤0.1% |
Volatility Pure substance; TGA, heating rate 20 °C /min in air :
| Weight Loss (%) | Temperature °C |
| 1.0 | 153 |
| 2.0 | 170 |
| 5.0 | 190 |
Solubility At 20 °C (g/100ml solvent) :
| Solvent | Solubility |
| Acetone | 3% |
| Benzene | 7% |
| Butyl acetate | 3% |
| Carbitol | 2% |
| Chloroform | 13% |
| Dioctyl phthalate | 2% |
| Ethanol | 0.3% |
| Ethyl Acetate | 3% |
| n-Hexane | 0.8% |
| MEK | 4% |
| Methanol | 0.2% |
| Methylene Chloride | 16% |
UV Absorption :
Dosage
- PVC : 0.2-0.5 %
- PP: 0.15-0.3%
- PC: 0.15-0.3%
- PS: 0.2-0.5%
- ABS resin: 0.3-0.5%
Toxicity & Safety
LeSORB – UV P light absorber is not intended for use in products for which prolonged contact with mucous membranes or abraded skin, or implantation within the human body is specially intended, unless the finished product has been tested in accordance with the Food and Drug Administration and/or other applicable safety
testing requirements. Because of wide range of such potential uses, Nanjing Lepuz Chemical Co., Ltd. is not able to recommend this.
Material :
As safe and effective for such uses and assumes no liability for any such uses.
Storage :
LeSORB – UV P light absorber may be stored up to two years in a sealed container. Containers should be stored in a cool, dry area. Extended storage at elevated temperatures or exposure to direct heat or sunlight could reduce product life. Keep containers sealed when not use.
Handing :
In accordance with good industrial practice, handle with care and avoid unnecessary personal contact. Protect skin. Prevent contamination of the environment. Avoid dust formation and ignition sources.
Packing :
LeSORB® UV-P is available in powder form in a 25kg (55.1 pound) carton, net weight, with an inner PE liner.