What is Antioxidant SP (Styrenated Phenol)?

Antioxidant SP is a styrenated phenol reaction mixture identified by CAS 61788-44-1. It typically contains mono-, di- and tristyrenated phenol components and is supplied as a light yellow to amber liquid.

What specifications should be confirmed before ordering?

Confirm appearance, viscosity, color, refractive index, hydroxyl value and the styrenated-phenol distribution. The batch analysis should state the actual assay and test method because this product is a liquid mixture rather than a single pure crystalline antioxidant.

How should Antioxidant SP be stored and handled?

Store in tightly closed containers in a cool, dry area away from strong oxidizers and direct sunlight. Use normal liquid-chemical handling controls and PPE, and follow the safety information for spill, disposal and first-aid procedures.

What does non-staining and non-discoloring mean for Antioxidant SP?

These terms mean the antioxidant does not tend to cause visible surface bloom or darkening in light-colored rubber and polymer products. This makes Antioxidant SP suitable for white, transparent or pastel compounds where color stability is important.

Antioxidant SP (Styrenated Phenol) CAS 61788-44-1

Antioxidant SP (Styrenated Phenol), CAS 61788-44-1, is a non-staining, non-discoloring hindered phenolic antioxidant used mainly as a stabilizer in natural and synthetic rubber and latex. Confirm the required viscosity, color and hydroxyl value for the intended compound.

CAS: 61788-44-1
Synonyms: Phenol, styrenated, AO-SP, Rubber Antioxidant SP, Mixed styrenated phenols, Poly(styrenated phenol)
Einecs: 262-975-0
Molecular Formula: C₃₀H₃₀O
Grade: Industrial grade 99%
Package: 200kg iron drum or 25kg plastic drum

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Product Description

Antioxidant SP, CAS 61788-44-1, is a styrenated phenol reaction mixture used as a non-staining, non-discoloring rubber antioxidant; the EC/EINECS number is 262-975-0.

Synonyms: Phenol, styrenated; AO-SP; Rubber Antioxidant SP; Mixed styrenated phenols; Poly(styrenated phenol).

CAS: 61788-44-1.

Molecular formula: C₃₀H₃₀O (representative, tristyrenated phenol).

EC number: 262-975-0.

It typically contains mono-, di- and tristyrenated phenol components and is supplied as a light yellow to amber viscous liquid.

Typical properties include density of about 1.0 g/cm³, boiling point above 250 °C, flash point above 182 °C and refractive index of about 1.634; it is insoluble in water and gasoline and soluble in benzene, toluene, acetone and most organic solvents.

It is used as a non-staining, non-discoloring antioxidant and stabilizer in natural rubber, SBR, butadiene rubber, polyolefins and polyoxymethylene.

It protects against heat, oxygen, weathering and light-induced aging, with easy dispersion and a typical dosage of about 0.5-2 phr.

It is suitable for white, transparent or pastel compounds and light-colored elastomers where color stability is important.

Confirm appearance, viscosity, color, refractive index, hydroxyl value and the styrenated-phenol distribution.

Store in tightly closed containers in a cool, dry area away from strong oxidizers and direct sunlight, and use normal liquid-chemical handling controls with PPE.

Confirm the current product-specific specification.

Confirm packaging with the requested quantity and destination requirements.

Document requirements should be confirmed from the current specification, SDS, COA, or other product-specific files.

Regulated-use suitability must be confirmed separately with current product-specific documentation.

The page is an RFQ entry point and does not state stock, price, MOQ, or fixed lead time.

For an RFQ, state the intended use, required specification, quantity, packaging, destination, and document needs.

FAQ - Technical & Supply Chain

Q:
What is Antioxidant SP (Styrenated Phenol)?

A: Antioxidant SP is a styrenated phenol reaction mixture identified by CAS 61788-44-1. It typically contains mono-, di- and tristyrenated phenol components and is supplied as a light yellow to amber liquid.
Q:
What is Antioxidant SP used for?

A: It is used as a non-staining, non-discoloring antioxidant and stabilizer in natural rubber, SBR, butadiene rubber, polyolefins and polyoxymethylene. It protects against heat, oxygen, weathering and light-induced aging.
Q:
What specifications should be confirmed before ordering?

A: Confirm appearance, viscosity, color, refractive index, hydroxyl value and the styrenated-phenol distribution. The batch analysis should state the actual assay and test method because this product is a liquid mixture rather than a single pure crystalline antioxidant.
Q:
How should Antioxidant SP be stored and handled?

A: Store in tightly closed containers in a cool, dry area away from strong oxidizers and direct sunlight. Use normal liquid-chemical handling controls and PPE, and follow the safety information for spill, disposal and first-aid procedures.
Q:
What does non-staining and non-discoloring mean for Antioxidant SP?

A: These terms mean the antioxidant does not tend to cause visible surface bloom or darkening in light-colored rubber and polymer products. This makes Antioxidant SP suitable for white, transparent or pastel compounds where color stability is important.

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