CAS number
CAS 355-46-4 Perfluorohexane sulfonic acid (PFHxS)…
CAS 355-46-4 · EC 206-587-1
Where CAS 355-46-4 appears: every table entry that prints it among its identifiers, in the newest version of each act this record holds, and every recorded change to those entries. Many entries name a group of substances and print no number, so absence here is not absence from the law. Not legal advice.
Where it appears now
PIC Regulation Annex V, the entry for Perfluorohexane sulfonic acid (PFHxS), its salts and…
Last changed in the version in force , by Regulation (EU) 2024/3199, the act that change names · Annex V on this site
| Description of chemicals/article(s) subject to export ban | Additional details, where relevant (e.g. name of chemical, EC No, CAS No, etc.) | |
|---|---|---|
| Perfluorohexane sulfonic acid (PFHxS), its salts and PFHxS-related compounds | EC No 206-587-1 and others CAS No 355-46-4 and others CN code 29049900 and others | |
POPs Regulation Annex I, the entry for Perfluorohexane sulfonic acid (PFHxS), its salts and…
Last changed in the version in force , by Regulation (EU) 2023/1608, the act that change names · Annex I on this site
| Substance | CAS No | EC No | Specific exemption on intermediate use or other specification |
|---|---|---|---|
| Perfluorohexane sulfonic acid (PFHxS), its salts and PFHxS-related compounds Perfluorohexane sulfonic acid (PFHxS), its salts and PFHxS-related compounds means the following: (i) perfluorohexane sulfonic acid, including any of its branched isomers; (ii) its salts; (iii) PFHxS-related compounds which, for the purposes of the Convention, are any substance that contains the chemical moiety C6F13S- as one of its structural elements and that degrades to PFHxS. | 355-46-4 and others | 206-587-1 and others | 1. For the purposes of this entry, Article 4(1), point (b), shall apply to concentrations of PFHxS or any of its salts equal to or below 0,025 mg/kg (0,0000025 % by weight) where they are present in substances, mixtures or articles. 2. For the purposes of this entry, Article 4(1), point (b), shall apply to the sum of concentrations of all PFHxS-related compounds equal to or below 1 mg/kg (0,0001 % by weight) where they are present in substances, mixtures or articles. 3. For the purposes of this entry, Article 4(1), point (b), shall apply to concentrations of PFHxS, its salts and PFHxS-related compounds equal to or below 0,1 mg/kg (0,00001 % by weight) where it is present in concentrated firefighting foam mixtures that are to be used or are used in the production of other firefighting foam mixtures. This exemption shall be reviewed and assessed by the Commission no later than 28 August 2026. |
POPs Regulation Annex IV, the entry for Perfluorohexane sulfonic acid (PFHxS), its salts and…
Last changed in the version in force , by Regulation (EU) 2025/2457, the act that change names · Annex IV on this site
| Substance | CAS No | EC No | Concentration limit referred to in Article 7(4)(a) |
|---|---|---|---|
| Perfluorohexane sulfonic acid (PFHxS), its salts and PFHxS-related compounds | 355-46-4 and others | 206-587-1 and others | 1 mg/kg (PFHxS and its salts), 40 mg/kg (sum of PFHxS-related compounds) By 30 December 2027, the Commission shall review that concentration limit and shall, where appropriate, adopt a delegated act in accordance with Article 15(2) to lower that value. |
Look up a number
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Its history
· amended · POPs Regulation Annex IV, the entry for Perfluorohexane sulfonic acid (PFHxS), its salts and…
Recorded in the version in force , by Regulation (EU) 2025/2457, the act that change names. The change on its version page
| Identifiers | Version | Substance | CAS No | EC No | Concentration limit referred to in Article 7(4)(a) |
|---|---|---|---|---|---|
| Perfluorohexane sulfonic acid (PFHxS), its salts and PFHxS-related compoundsCAS 355-46-4EC 206-587-1 | Before | Perfluorohexane sulfonic acid (PFHxS), its salts and PFHxS-related compounds | 355-46-4 and others | 206-587-1 and others | 1 mg/kg
(PFHxS and its salts), 40 mg/kg
(sum of PFHxS-related compounds)
|
| After | Perfluorohexane sulfonic acid (PFHxS), its salts and PFHxS-related compounds | 355-46-4 and others | 206-587-1 and others | 1 mg/kg (PFHxS and its salts), 40 mg/kg (sum of PFHxS-related compounds) By 30 December 2027, the Commission shall review that concentration limit and shall, where appropriate, adopt a delegated act in accordance with Article 15(2) to lower that value. |
· added · PIC Regulation Annex V, the entry for Perfluorohexane sulfonic acid (PFHxS), its salts and…
Recorded in the version in force , by Regulation (EU) 2024/3199, the act that change names. The change on its version page
| Identifiers | Description of chemicals/article(s) subject to export ban | Additional details, where relevant (e.g. name of chemical, EC No, CAS No, etc.) | |
|---|---|---|---|
| Perfluorohexane sulfonic acid (PFHxS), its salts and PFHxS-related compoundsCAS 355-46-4EC 206-587-1 | Perfluorohexane sulfonic acid (PFHxS), its salts and PFHxS-related compounds | EC No 206-587-1 and others CAS No 355-46-4 and others CN code 29049900 and others | |
· added · POPs Regulation Annex I, the entry for Perfluorohexane sulfonic acid (PFHxS), its salts and…
Recorded in the version in force , by Regulation (EU) 2023/1608, the act that change names. The change on its version page
| Identifiers | Substance | CAS No | EC No | Specific exemption on intermediate use or other specification |
|---|---|---|---|---|
| Perfluorohexane sulfonic acid (PFHxS), its salts and PFHxS-related compoundsCAS 355-46-4EC 206-587-1 | Perfluorohexane sulfonic acid (PFHxS), its salts and PFHxS-related compounds Perfluorohexane sulfonic acid (PFHxS), its salts and PFHxS-related compounds means the following: (i) perfluorohexane sulfonic acid, including any of its branched isomers; (ii) its salts; (iii) PFHxS-related compounds which, for the purposes of the Convention, are any substance that contains the chemical moiety C6F13S- as one of its structural elements and that degrades to PFHxS. | 355-46-4 and others | 206-587-1 and others | 1. For the purposes of this entry, Article 4(1), point (b), shall apply to concentrations of PFHxS or any of its salts equal to or below 0,025 mg/kg (0,0000025 % by weight) where they are present in substances, mixtures or articles. 2. For the purposes of this entry, Article 4(1), point (b), shall apply to the sum of concentrations of all PFHxS-related compounds equal to or below 1 mg/kg (0,0001 % by weight) where they are present in substances, mixtures or articles. 3. For the purposes of this entry, Article 4(1), point (b), shall apply to concentrations of PFHxS, its salts and PFHxS-related compounds equal to or below 0,1 mg/kg (0,00001 % by weight) where it is present in concentrated firefighting foam mixtures that are to be used or are used in the production of other firefighting foam mixtures. This exemption shall be reviewed and assessed by the Commission no later than 28 August 2026. |
· added · POPs Regulation Annex IV, the entry for Perfluorohexane sulfonic acid (PFHxS), its salts and…
Recorded in the version in force , by Regulation (EU) 2022/2400, the act that change names. The change on its version page
| Identifiers | Substance | CAS No | EC No | Concentration limit referred to in Article 7(4)(a) |
|---|---|---|---|---|
| Perfluorohexane sulfonic acid (PFHxS), its salts and PFHxS-related compoundsCAS 355-46-4EC 206-587-1 | Perfluorohexane sulfonic acid (PFHxS), its salts and PFHxS-related compounds | 355-46-4 and others | 206-587-1 and others | 1 mg/kg (PFHxS and its salts), 40 mg/kg (sum of PFHxS-related compounds) The Commission shall review that concentration limit and shall, where appropriate, adopt a legislative proposal to lower that value, where such lowering is feasible in accordance with scientific and technical progress, no later than 30 December 2027. |
Sources
- PIC Regulation: every version the record holds; rows read from EUR-Lex consolidated version 02012R0649-20261001, in force 1 October 2026 (external, EUR-Lex)
- POPs Regulation: every version the record holds; rows read from EUR-Lex consolidated version 02019R1021-20260930, in force 30 September 2026 (external, EUR-Lex)