National Standard Released for Determination of Short-Chain Chlorinated Paraffins in Chlorinated Paraffins
2026-4-13
On March 31, the national standard Determination of Short-Chain Chlorinated Paraffins Content in Chlorinated Paraffins Products, drafted mainly by Shanxi Provincial Research Institute of Chemical Industry and Zhenyang Development, was officially issued and will come into force on October 1, 2026.
Chlorinated paraffins are classified into short-chain, medium-chain and long-chain types by carbon chain length. Short-chain chlorinated paraffins (SCCPs) refer to straight-chain chlorinated hydrocarbons with a carbon chain length of C10 to C13, a chlorine content exceeding 48% by weight, and a concentration of 1% or more by weight in the mixture. SCCPs exhibit persistence, bioaccumulation, long-range environmental transport potential and toxicity to organisms. At present, the main sources of SCCPs in the environment, soil and atmosphere are the daily production, packaging, storage, transportation and use of chlorinated paraffins. Given the persistent hazards of SCCPs to human health, countries worldwide have strengthened their control over SCCPs over the past decade. Parties to the Stockholm Convention have adopted the Stockholm Convention on Persistent Organic Pollutants (POPs), listing SCCPs in the catalogue of banned or restricted products. On December 29, 2022, China¡äs Ministry of Ecology and Environment issued the List of New Pollutants under Key Control (2023 Edition), which includes a ban on the production, processing, use, import and export of SCCPs. In May 2022, the General Office of the State Council formulated the Action Plan for the Control of New Pollutants, requiring the formulation or revision of standards for environmental risk assessment of chemical substances, socioeconomic impact analysis, hazard characteristic testing methods, etc. Against this backdrop, National Standardization Administration put the development of a method for determining SCCPs content in chlorinated paraffins products on the agenda. With the joint efforts of all drafting and method validation institutions, all tasks for standard formulation and submission were successfully completed.
The national standard Determination of Short-Chain Chlorinated Paraffins Content in Chlorinated Paraffins Products focuses on the detection of SCCPs in chlorinated paraffins products, specifying two determination methods: Method A ¡ª Gas Chromatography-Mass Spectrometry with Electron Capture Negative Chemical Ionization Source (GC-ECNI-MS), and Method B ¡ª Gas Chromatography (GC). The formulation of this standard will effectively guide and standardize quality control by chlorinated paraffins manufacturers, maintain market order, and promote the sustainable, stable, healthy and orderly development of the industry.
In recent years, the company has attached great importance to standardization. It has previously formulated 12 enterprise standards, participated in 3 industrial standards, and presided over or drafted 18 group standards. Determination of Short-Chain Chlorinated Paraffins Content in Chlorinated Paraffins Products is the first national standard drafted by the company, demonstrating its exemplary and leading role in promoting the green transformation of the chlorinated paraffins industry and helping further enhance its voice and influence in the sector. Going forward, the company will continue to take quality and technological leadership in chlorinated paraffins as its foundation, uphold high-standard technological innovation, and lead the green and high-quality development of the chlorinated paraffins industry.
Chlorinated paraffins are classified into short-chain, medium-chain and long-chain types by carbon chain length. Short-chain chlorinated paraffins (SCCPs) refer to straight-chain chlorinated hydrocarbons with a carbon chain length of C10 to C13, a chlorine content exceeding 48% by weight, and a concentration of 1% or more by weight in the mixture. SCCPs exhibit persistence, bioaccumulation, long-range environmental transport potential and toxicity to organisms. At present, the main sources of SCCPs in the environment, soil and atmosphere are the daily production, packaging, storage, transportation and use of chlorinated paraffins. Given the persistent hazards of SCCPs to human health, countries worldwide have strengthened their control over SCCPs over the past decade. Parties to the Stockholm Convention have adopted the Stockholm Convention on Persistent Organic Pollutants (POPs), listing SCCPs in the catalogue of banned or restricted products. On December 29, 2022, China¡äs Ministry of Ecology and Environment issued the List of New Pollutants under Key Control (2023 Edition), which includes a ban on the production, processing, use, import and export of SCCPs. In May 2022, the General Office of the State Council formulated the Action Plan for the Control of New Pollutants, requiring the formulation or revision of standards for environmental risk assessment of chemical substances, socioeconomic impact analysis, hazard characteristic testing methods, etc. Against this backdrop, National Standardization Administration put the development of a method for determining SCCPs content in chlorinated paraffins products on the agenda. With the joint efforts of all drafting and method validation institutions, all tasks for standard formulation and submission were successfully completed.
The national standard Determination of Short-Chain Chlorinated Paraffins Content in Chlorinated Paraffins Products focuses on the detection of SCCPs in chlorinated paraffins products, specifying two determination methods: Method A ¡ª Gas Chromatography-Mass Spectrometry with Electron Capture Negative Chemical Ionization Source (GC-ECNI-MS), and Method B ¡ª Gas Chromatography (GC). The formulation of this standard will effectively guide and standardize quality control by chlorinated paraffins manufacturers, maintain market order, and promote the sustainable, stable, healthy and orderly development of the industry.
In recent years, the company has attached great importance to standardization. It has previously formulated 12 enterprise standards, participated in 3 industrial standards, and presided over or drafted 18 group standards. Determination of Short-Chain Chlorinated Paraffins Content in Chlorinated Paraffins Products is the first national standard drafted by the company, demonstrating its exemplary and leading role in promoting the green transformation of the chlorinated paraffins industry and helping further enhance its voice and influence in the sector. Going forward, the company will continue to take quality and technological leadership in chlorinated paraffins as its foundation, uphold high-standard technological innovation, and lead the green and high-quality development of the chlorinated paraffins industry.