ISO 8312:2015
Rubber compounding ingredients — Stearic acid — Definition and test methods
ISO 8312:2015 defines stearic acid (including blends of stearic and palmitic acid) for use as a compounding ingredient in the rubber industry and specifies the test methods for describing its properties.
Classification of stearic acid and stearic acid/palmitic acid blends according to iodine value and typical chemical and physical properties for such materials for use in the rubber industry are given in Annex L. Annex L is given for information only.
In this International Standard, the atomic absorption spectrometric method is the preferred method.
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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Sampling
5 Physical and chemical properties
6 Test report
Annex A (normative) Determination of ash at 550 °C ± 25 °C
Annex B (normative) Determination of copper content — Atomic absorption spectrometric method
Annex C (normative) Determination of manganese content — Atomic absorption spectrometric method
Annex D (normative) Determination of iron content — Atomic absorption spectrometric method
Annex E (normative) Determination of nickel content — Atomic absorption spectrometric method
Annex F (normative) Determination of mineral acidity — Titrimetric method
Annex G (normative) Determination of copper content — Molecular absorption spectrometric method
Annex H (normative) Determination of manganese content — Molecular absorption spectrometric method
Annex J (normative) Determination of iron content — Molecular absorption spectrometric method
Annex K (normative) Determination of nickel content — Molecular absorption spectrometric method
Annex L (normative) Classification of stearic and stearic acid/palmitic acid blends and typical physical and chemical properties
Bibliography
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Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Sampling
5 Physical and chemical properties
6 Test report
Annex A (normative) Determination of ash at 550 °C ± 25 °C
Annex B (normative) Determination of copper content — Atomic absorption spectrometric method
Annex C (normative) Determination of manganese content — Atomic absorption spectrometric method
Annex D (normative) Determination of iron content — Atomic absorption spectrometric method
Annex E (normative) Determination of nickel content — Atomic absorption spectrometric method
Annex F (normative) Determination of mineral acidity — Titrimetric method
Annex G (normative) Determination of copper content — Molecular absorption spectrometric method
Annex H (normative) Determination of manganese content — Molecular absorption spectrometric method
Annex J (normative) Determination of iron content — Molecular absorption spectrometric method
Annex K (normative) Determination of nickel content — Molecular absorption spectrometric method
Annex L (normative) Classification of stearic and stearic acid/palmitic acid blends and typical physical and chemical properties
Bibliography