ASTM D4295-89(2005)

ASTM D4295-89(2005) - 1.5.2005

Significance and Use

Zinc oxide is an important rubber compounding material. It is used to activate the organic accelerators to increase the rate of vulcanization and to enhance physical properties. It is also a vulcanizing agent for halogen-containing elastomers.

1. Scope

1.1 This classification system covers the compounding material commercially known as zinc oxide. The types of zinc oxide used in the rubber industry are related to the production process used. Typical chemical and physical properties are included.

2. Referenced Documents

D4075-06(2025)	Standard Test Methods for Rubber Compounding Materials—Flame Atomic Absorption Analysis—Determination of Metals
D3280-85(2020)	Standard Test Methods for Analysis of White Zinc Pigments
D3037-93	Standard Test Methods for Carbon Black—Surface Area by Nitrogen Adsorption (Withdrawn 1999)
D280-01(2023)	Standard Test Methods for Hygroscopic Moisture (and Other Matter Volatile Under the Test Conditions) in Pigments
D4315-21(2025)	Standard Test Methods for Rubber Compounding Material—Zinc Oxide