RIASORB® UV-928

Identification & Functionality

Chemical Family

Benzotriazoles

Chemical Name

UV absorber-928

CASE Ingredients Functions

Light Stabilizer,

UV Absorber

CAS No.

73936-91-1

EC No.

422-600-5

Technologies

CASE Ingredients

Product Families

CASE Ingredients — Additives

Functional Additives

Molecular Formula

C₂₉H₃₅N₃O

Chemical Structure

Features & Benefits

CASE Ingredients Features

Crack Resistance,

Good Gloss Retention,

Good Heat Stability,

Good Light Stability,

High Durability,

High Performance,

Low Blistering

Applications & Uses

Markets

Automotive & Transportation,

Paints & Coatings

Applications

Paints & Coatings — Automotive & Transportation

Automotive OEM Coatings

Automotive & Transportation — Coatings & Finishes

Automotive OEM Coatings

Paints & Coatings — Industrial Coatings

Coil Coatings

Coating Type

Coil Coating,

Powder Coating

Applications

RIASORB^® UV-928 is a benzotriazole UV absorber, providing high solubility, high thermal stability, excellent photostability. It is suitable for high performance coatings, especially those exposed to high thermal or extreme environmental stress. RIASORB^® UV-928 can be used in combination with HALS to achieve superior durability, exhibiting discoloration, gloss reduction, cracking, and delamination.

Properties

Physical Form

Granules,

Solid

Appearance

Slightly yellow powder

Physical Properties

	Value	Units	Test Method / Conditions
Melting Range	108 - 113	℃	—

Typical Properties

	Value	Units	Test Method / Conditions
Molecular Weight	441	—	—

Solubility

	Value	Units	Test Method / Conditions
Acetone (at 25℃)	14	g/100g	—
Butyl Acetate (at 25℃)	34	g/100g	—
Diethylene Glycol Monobutyl Ether (at 25℃)	max. 0.01	g/100g	—
Ethanol (at 25℃)	max. 0.5	g/100g	—
Methyl N-Amyl Ketone (at 25℃)	30	g/100g	—
n-Hexane (at 25℃)	11	g/100g	—
PMA (at 25℃)	5	g/100g	—
Solvesso 100 (at 25℃)	min. 50	g/100g	—
Water Content (at 25℃)	max. 0.01	g/100g	—
Xylene (at 25℃)	min. 50	g/100g	—

Regulatory & Compliance

Certifications & Compliance

ISO 14001,

OHSAS

Technical Details & Test Data

UV Spectra

10 mg/L in Chloroform

Safety & Health

Handling & Safety

The use of proper protective equipment is recommended. Excess exposure to the product should be avoided. Wash thoroughly after handling.

Packaging & Availability

Packaging Type

Bags

Storage & Handling

Shelf Life

24 Months

Storage Conditions

Store the product in a cool, dry, well-ventilated area away from incompatible materials, keep tightly closed. With proper storage, shelf life of this product is 24 months from the manufacture date.