RIANOX® 626

Identification & Functionality

Chemical Family

Phosphites

Chemical Name

3,9-bis(2,4-di-tert-butylphenoxy)-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5]undecane

Plastics & Elastomers Functions

Antioxidant,

Secondary Antioxidant,

Stabilizer

CAS No.

26741-53-7

EC No.

247-952-5

Technologies

Elastomers,

Plastics

Product Families

Elastomers — Elastomer Additives

Antioxidants & Stabilizers

Plastics — Polymer Additives

Antioxidants & Stabilizers

Molecular Formula

C₃₃H₅₀O₆P₂

Chemical Structure

Features & Benefits

Materials Features

Good Color Stability,

High Efficiency,

High Molecular Weight,

High Performance,

Low Volatility,

Prevents Thermo-Oxidative Degradation

Applications & Uses

Compatible Polymers & Resins

Acrylonitrile Butadiene Styrene (ABS),

High-Density Polyethylene (HDPE),

Linear Low Density Polyethylene (LLDPE) ,

Low-Density Polyethylene (LDPE),

Polycarbonates (PC),

Polyolefins,

Polypropylenes (PP),

Polyvinyl Chloride (PVC)

Use Level

0.05 - 0.15%

Applications

• RIANOX® 626 is excellent for use in polyolefins (PP, HDPE, LDPE, LLDPE), ABS, PVC, polycarbonate as well as many other plastics. RIANOX® 626 provides excellent color stabilization during compounding, fabrication and end use and is an excellent stabilizer for reducing polymer degradation during processing.
• Typical concentrations between 0.05 – 0.15% of RIANOX® 626 provides thermo-oxidative stability during processing.

Properties

Physical Form

Powder,

Solid

Appearance

White to off - white powder

Insoluble in

Water

Typical Properties

	Value	Units	Test Method / Conditions
Molecular Weight	604	—	—

Solubility

	Value	Units	Test Method / Conditions
Acetone (at 25℃)	9	g/100g	—
Heptane (at 25℃)	5	g/100g	—
Hexane (at 25℃)	5	g/100g	—
Methanol (at 25℃)	2	g/100g	—
Tetrahydrofuran (at 25℃)	35	g/100g	—
Toluene (at 25℃)	36	g/100g	—

Regulatory & Compliance

Certifications & Compliance

ISO 14001,

OHSAS

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

Cartons

Storage & Handling

Shelf Life

6 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 6 months from the manufacture date.
• This product is easy to moisture absorption and hydrolyzation. Pls use it up at a short time after opening.