ASTM D2227-96(2020)

Standard Specification for Natural Rubber (NR) Technical Grades

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STANDARD published on 1.6.2020

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The information about the standard:

Designation standards: ASTM D2227-96(2020)
Publication date standards: 1.6.2020
SKU: NS-997569
The number of pages: 2
Approximate weight : 6 g (0.01 lbs)
Country: American technical standard
Category: Technical standards ASTM

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Latex and raw rubber

Annotation of standard text ASTM D2227-96(2020) :

This specification covers the minimum physical and chemical requirements for five technical grades of raw natural rubber. Materials are classified into grades according to retained dirt content, ash content, volatile matter content, nitrogen content, initial plasticity, plasticity retention index, color index, and Mooney viscosity. Skim rubber is not permitted in any grade.

Keywords:
natural rubber (NR), technical grade ,, ICS Number Code 83.040.10 (Latex and raw rubber)

Additional information

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D3533-05	Standard Test Method for Rubber-Nitrogen Content (Withdrawn 2006)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

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