Significance and Use
These test methods are intended for quality control acceptance of natural rubber and may be used for referee purposes.
1. Scope
1.1 These test methods cover the sampling and chemical analysis of solid natural rubber in the forms supplied to the rubber industry.
1.2 The analytical procedures appear in the following order:
| Sections |
| Sampling | 5 |
| Volatile Matter | 6-8 |
| Dirt | 9-13 |
| Ash | 14-17 |
| Copper (Referee Colorimetric Method) | 18-22 |
| Copper (Alternative Colorimetric Method) | 23-27 |
| Copper (Alternative Flame Atomic Absorption Method) | 28 |
| Manganese (Colorimetric Method) | 29-33 |
| Manganese (Alternative Flame Atomic Absorption Method) | 34 |
| Iron (Colorimetric Method) | 35-39 |
| Acetone Extract | 40-41 |
| Rubber Hydrocarbon | 42-43 |
| Nitrogen | 44-45 |
1.3 The values stated in SI units are to be regarded as the standard. The values in parentheses are for information only.
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
2. Referenced Documents (purchase separately) 
The documents listed below are referenced within the subject standard but are not provided as part of the standard.
ASTM Standards
D297 Test Methods for Rubber Products--Chemical Analysis
D1193 Specification for Reagent Water
D1485 Practice for Rubber from Natural Sources--Sampling and Sample Preparation
D3533 Test Method for Rubber--Nitrogen Content
D4004 Test Methods for Rubber--Determination of Metal Content by Flame Atomic Absorption (AAS) Analysis
D4483 Practice for Evaluating Precision for Test Method Standards in the Rubber and Carbon Black Manufacturing Industries
E11 Specification for Woven Wire Test Sieve Cloth and Test Sieves
E131 Terminology Relating to Molecular Spectroscopy
Keywords
ash; copper; dirt; iron; manganese; nitrogen; rubber hydrocarbon; volatile matter; Manganese content--rubber; Natural rubber (NR); Nitrogen; Rubber chemicals; Volatile matter content--rubber; Ash--rubber; Chemical analysis--rubber chemicals/materials; Contamination; Copper content; Dirt accumulation/analysis; Iron content; Isoprene (IR) rubber
ICS Code
ICS Number Code 83.040.10 (Latex and raw rubber)
DOI: 10.1520/D1278-91AR11
ASTM International is a member of CrossRef.
Citing ASTM Standards
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