ASTM D2227-96(2020) - 1.6.2020
 
Significance and Use

4.1 The general end-use quality of manufactured rubber products depends on the physical and chemical properties of the rubber.

 
1. Scope

1.1 This specification covers minimum physical and chemical quality requirements or specifications for five grades of raw natural rubber.

1.2 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

 
2. Referenced Documents

D3194-17(2022)

Standard Test Method for Rubber From Natural Sources—Plasticity Retention Index (PRI)

D3533-05

Standard Test Method for Rubber-Nitrogen Content (Withdrawn 2006)

D1278-91a(2020)

Standard Test Methods for Rubber from Natural Sources´Chemical Analysis (Includes all amendments and changes 6/26/2020).

D3157-05(2020)

Standard Test Method for Rubber from Natural Sources´Color

D1646-19a

Standard Test Methods for Rubber´Viscosity, Stress Relaxation, and Pre-Vulcanization Characteristics (Mooney Viscometer) (Includes all amendments and changes 11/26/2019).

D1485-07(2020)

Standard Practice for Rubber from Natural Sources´Sampling and Sample Preparation