BS ISO 3899-2005 (2008) PDF

Full title and description

STB BS ISO 3899-2005 (2008) — national adoption (STB) of the British adoption (BS) of ISO 3899:2005, titled "Rubber — Nitrile latex — Determination of residual acrylonitrile content". The document reproduces the ISO test method for measuring residual acrylonitrile in nitrile rubber latices and is published as a Belarusian state standard with the BS ISO text from 2005 adopted in 2008.

Abstract

Specifies a laboratory method for the determination of the residual acrylonitrile content of nitrile rubber latices which have a residual acrylonitrile content of less than 0.2 % (by mass). The method is intended to provide a reproducible quantitative result for residual monomer content in nitrile latex.

General information

• Status: Active / published (national adoption of BS ISO 3899:2005; listed as active in commercial document repositories).
• Publication date: ISO edition: October 2005 (ISO 3899:2005); BS adoption published 2006 (BS ISO 3899:2005); STB (Belarus) adoption recorded 2008.
• Publisher: International text: ISO (International Organization for Standardization). National adoption published under the STB designation by the Republic of Belarus national standards system (СТБ).
• ICS / categories: 83.040.10 (Rubber — testing and analysis).
• Edition / version: ISO edition 3 (2005). Adopted as BS ISO 3899:2005 and subsequently issued under STB as STB BS ISO 3899-2005 (2008).
• Number of pages: ISO published text: 3 pages (ISO official version); BS/STB PDF forms commonly sold (national/adoption versions) typically include national foreword and total about 10 pages in BS-adopted PDF distributions.

Scope

Applies to nitrile rubber latices whose residual acrylonitrile content is below 0.2 % (m/m). It defines a laboratory analytical procedure to isolate and quantify the residual acrylonitrile present in latex samples so that manufacturers, testing laboratories and regulatory bodies can assess compliance and product safety. The method is intended for routine quality control and comparative determinations.

Key topics and requirements

• Determination of residual acrylonitrile in nitrile rubber latex (limit applicability < 0.2 % by mass).
• Analytical technique involving sample distillation and collection of distillate in methanol (method description and practical steps referenced in ISO and historical editions).
• Chemical treatment of the distillate (e.g., addition of mercaptan reagent) and titrimetric determination of excess reagent (classical titration approach described in earlier and related editions).
• Requirements for sample preparation, apparatus and calculation of acrylonitrile content to achieve reproducible, comparable results.
• Intended use for quality control, regulatory testing and inter-laboratory comparison for nitrile-latex based products (for example, medical gloves, dipped goods and other latex formulations).

Typical use and users

Primary users include industrial and independent materials testing laboratories, manufacturers of nitrile-latex products (gloves, dipped articles), quality assurance/quality control teams, and regulatory or conformity assessment bodies that need to measure and control residual monomer content for safety and product-specification compliance. The method is used during raw-material evaluation, final-product testing and when confirming compliance with product safety limits.

Related standards

ISO 3899:2005 supersedes earlier editions (ISO 3899:1988 and ISO 3899:1976) that described comparable methods; those withdrawn editions contain historically related procedural descriptions. Other ISO and national standards covering rubber testing and analytical methods (standards maintained by ISO/TC 45 and its subcommittees) are relevant for broader rubber analysis and quality control programs.

Keywords

nitrile latex, acrylonitrile, residual monomer, latex testing, distillation, titration, rubber analysis, ISO 3899, STB, BS ISO

FAQ

Q: What is this standard?

A: It is the test method titled "Rubber — Nitrile latex — Determination of residual acrylonitrile content" (ISO 3899:2005) issued internationally by ISO and adopted nationally under the STB designation as STB BS ISO 3899-2005 (2008).

Q: What does it cover?

A: The standard covers a laboratory procedure for quantifying residual acrylonitrile in nitrile-latex samples (applicable for residual content < 0.2 % by mass), including sample handling, distillation of a test portion, collection of distillate and chemical/titrimetric analysis to calculate the acrylonitrile concentration.

Q: Who typically uses it?

A: Manufacturers of nitrile-latex products (e.g., glove makers), contract and in-house analytical laboratories, quality assurance teams and regulators monitoring residual monomer levels for product safety and compliance.

Q: Is it current or superseded?

A: The ISO 3899:2005 edition is the current ISO edition for this subject (third edition, published October 2005) and has been confirmed in ISO reviews; the STB national adoption of the BS ISO text is recorded as a 2008 issue. Users should verify the national/regulatory status in their jurisdiction before use.

Q: Is it part of a series?

A: It is one of the ISO standards dealing with rubber materials and testing and is maintained under ISO/TC 45 (Rubber and rubber products), specifically within committees handling latex and testing methods. There are other related ISO test standards for rubber and latex properties maintained by the same technical committees.

Q: What are the key keywords?

A: nitrile latex; acrylonitrile; residual monomer; latex analysis; distillation; titration; rubber testing; ISO 3899; STB; BS ISO.