ISO 19984-2:2017 PDF

Name: ISO 19984-2:2017 — Rubber and rubber products — Determination of biobased content — Part 2: Biobased carbon content
SKU: ISO 19984-2:2017
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Rubber and rubber products — Determination of biobased content — Part 2: Biobased carbon content

Название (английский):

ISO 19984-2:2017

Rubber and rubber products — Determination of biobased content — Part 2: Biobased carbon content

Статус документа:: Отменён
Формат:: Электронный (PDF)
Количество страниц:: 21
Дата публикации:: 14 августа 2017 г.
Издание:: ISO IS 19984 edition 1 version 1
ICS:: 83.060

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Описание (английский):

ISO 19984-2:2017 specifies measuring methods for the determination of biobased carbon contents in rubber and rubber products, including polyurethanes. The methods focus on carbon atoms in rubber or rubber products, and determine whether the carbon-containing component is biobased or not judging from the concentration of 14C, radiocarbon isotope. ISO 19984-2:2017 applies to rubber and rubber products such as raw materials, materials and final products.

Abstract

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Overview

ISO 19984-2:2017 - "Rubber and rubber products - Determination of biobased content - Part 2: Biobased carbon content" specifies laboratory methods to measure the biobased carbon content of rubber and rubber products (including polyurethanes). The standard uses radiocarbon analysis (14C) to distinguish carbon originating from recent biomass versus fossil sources, enabling quantitative reporting of the fraction of carbon atoms in a product that are biobased. ISO 19984-2 is part of the ISO 19984 series and applies to raw materials, intermediate materials and final rubber products.

Key technical topics and requirements

Scope and principle: Determines biobased carbon as the mass fraction of carbon derived from biomass relative to total carbon (χB = CB / (CB + CF + CNB) × 100).

Radiocarbon (14C) approach: Uses the naturally occurring radiocarbon concentration (pMC or 14C activity) as a tracer - fossil carbon is essentially devoid of 14C.

Two accepted measurement methods:

Method A - Accelerator Mass Spectrometry (AMS): direct isotope-ratio measurement of 12C, 13C and 14C. Typical sample amount 1–10 mg; measurement time ~10–30 min; relative standard deviation ~0.2%–2.0%.
Method B - Liquid Scintillation Counting (LSC): indirect 14C determination via beta decay counting. Sample amount range ~0.5 mg–2 g; measurement time ~4–24 h; relative standard deviation ~0.2%–10%.

Sample preparation: Complete oxidation of sample carbon to CO2 prior to measurement (sample prep methods described in Annex A/B).

Sampling references: Cross-references to ISO sampling standards (e.g., ISO 123, ISO 124, ISO 1795, ISO 15528, ISO 4661-2) for latex, raw materials and vulcanized rubber.

Corrections and calibration: Applies correction factors for atmospheric 14C variations (notably the nuclear-bomb peak era) and uses standard reference materials (e.g., SRM 4990c) with a REF (100% biobased carbon) value in accordance with ASTM D6866.

Documentation: Requirements for test reports, precision data and examples (Annexes C–E).

Practical applications and users

Who uses it: Rubber manufacturers, compounders, environmental compliance teams, testing laboratories, certification bodies and R&D groups working on bio-based elastomers and sustainable materials.

Practical uses:

Verify biobased claims on rubber products and raw materials when formulation details are unavailable.
Support eco-labeling, sustainability reporting and supply-chain verification.
Compare measured biobased carbon content against theoretical formulation-based calculations (ISO 19984-1).
Guide product development when substituting fossil-derived ingredients with biomass-derived alternatives.

Related standards

ISO 19984-1 - General principles and calculation methods (formulation-based)

ISO 19984-3 - Separation of constituents and constituent-level biobased mass determination

Sampling and preparative standards: ISO 123, ISO 124, ISO 15528, ISO 1795, ISO 4661-2

Keywords: ISO 19984-2:2017, biobased carbon content, rubber products, 14C, radiocarbon, AMS, LSC, biobased content determination, sustainability, ISO standard.

ISO 19984-2:2017 PDF

Abstract

Похожие стандарты

Overview

Key technical topics and requirements

Practical applications and users

Related standards

Технические детали

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