{
  "$schema": "https://foodadditiveindex.com/api/v1/schema.json",
  "id": "https://foodadditiveindex.com/additives/copper-sulfate",
  "slug": "copper-sulfate",
  "name": "Copper sulfate",
  "identifiers": {
    "e_number": null,
    "ins_number": null,
    "cas_number": "7758-99-8",
    "inchikey": "JZCCFEFSEZPSOG-UHFFFAOYSA-L",
    "pubchem_cid": 24463
  },
  "functional_class": null,
  "summary": "Copper sulfate is a copper source in fortified foods and a processing aid, and is also used to supplement animal feed.",
  "derivation_summary": "Produced by dissolving copper oxide or metal in sulfuric acid.",
  "regulatory_status": [
    {
      "jurisdiction": "US",
      "jurisdiction_name": "United States",
      "authority": "Food and Drug Administration",
      "status": "permitted",
      "status_label": "Permitted",
      "provision_count": 1,
      "provisions": [
        {
          "status": "permitted",
          "food_category": null,
          "max_level": null,
          "max_level_unit": null,
          "conditions": null,
          "effective_from": null,
          "citation": {
            "ref": "21 CFR 184.1261",
            "url": "https://www.ecfr.gov/current/title-21/section-184.1261"
          },
          "source": "ecfr",
          "retrieved_at": "2026-09-07T18:25:51.549Z"
        }
      ]
    },
    {
      "jurisdiction": "CODEX",
      "jurisdiction_name": "Codex Alimentarius",
      "authority": "Codex Alimentarius Commission / JECFA",
      "status": "not_listed",
      "status_label": "Not listed",
      "note": "Does not appear on this jurisdiction’s permitted list. That is not the same as being prohibited.",
      "provision_count": 0,
      "provisions": []
    }
  ],
  "names": [
    {
      "name": "7758-98-7",
      "type": "cas",
      "source": "openfoodtox"
    },
    {
      "name": "7758-99-8",
      "type": "cas",
      "source": "ecfr"
    },
    {
      "name": "Blue copper AS",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Blue Vicking",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Bluestone",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Calcanthite",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Caswell No. 256",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "CCRIS 5556",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Chinese Pharmacopoeia Reagent Coloration - Primary Solution Blue",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "copper (2+) sulfate pentahydrate",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "COPPER (AS CUPRIC SULFATE) [VANDF]",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Copper sulfate",
      "type": "common",
      "source": "openfoodtox"
    },
    {
      "name": "Copper sulfate (CuSO4) pentahydrate",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Copper sulfate pentahydrate",
      "type": "common",
      "source": "openfoodtox"
    },
    {
      "name": "copper sulfate-penta hydrate",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "copper sulphate pentahydrate",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "copper sulphate(5.H2O)",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "copper(11) sulfate pentahydrate",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Copper(2+) sulfate--water (1/1/5)",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "copper(2+) sulfate--water (1/5)",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "COPPER(2+) SULPHATE (1:1) PENTAHYDRATE",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "COPPER(2+) SULPHATE PENTAHYDRATE",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Copper(II) sulfate pentahydrate",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Copper(II) sulfate pentahydrate (99.999%-Cu) PURATREM",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Copper(II) sulfate pentahydrate, ACS reagent",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Copper(II) sulfate pentahydrate, Trace metals grade, 99.995%",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Copper(II) Sulfide Powder",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "copper(II) sulphate pentahydrate",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Copper(II) sulphide, thioxocopper",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Copper(II)sulfatepentahydrate",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "copper(II)sulphate-pentahydrate",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "COPPERFINE-ZINC",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "CuH10O9S",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Cupric sulfate (USP)",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Cupric Sulfate [USP]",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "cupric sulfate copper(II) sulfate, pentahydrate CuSO4.5H2O cupric sulfate pentahydrate",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Cupric sulfate pentahydrate",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Cupric sulfate pentahydrate, Ultra pure, USP, EP, Crystals, Low heavy metals (As: <= 1 ppm, Cd: <= 1 ppm, Pb: <= 1 ppm & Hg: <= 0.1 ppm)",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Cupric sulfate pentahydrate, Ultra pure, USP, EP, Powder, Low heavy metals (As: <= 1 ppm, Cd: <= 1 ppm, Pb: <= 1 ppm & Hg: <= 0.1 ppm)",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Cupric sulphate 5-hydrate",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Cupric sulphate pentahydrate",
      "type": "common",
      "source": "openfoodtox"
    },
    {
      "name": "CUPRUM SULPHURICUM [HPUS]",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "CuSO4(H2O)5",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "CuSO4.5H2O",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "EPA Pesticide Chemical Code 024401",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "HSDB 2968",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Kupfersulfat-pentahydrat",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Kupfervitriol",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "NATURAL CHALCANTHITE",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Salzburg vitriol",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Sentry AQ mardel coppersafe",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "SULFURIC ACID COPPER(2+) SALT (1:1), HYDRATE (1:5)",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "SULFURIC ACID, COPPER (2+) SALT (1:1), PENTAHYDRATE",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "SULFURIC ACID, COPPER (2+) SALT, PENTAHYDRATE",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Triangle",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Vencedor",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Copper;sulfate",
      "type": "iupac",
      "source": "openfoodtox"
    },
    {
      "name": "Copper;sulfate;pentahydrate",
      "type": "iupac",
      "source": "openfoodtox"
    },
    {
      "name": "Copper sulfate",
      "type": "label",
      "source": "ecfr"
    }
  ],
  "hazard_reference_values": [],
  "sources": [
    {
      "key": "ecfr",
      "name": "Electronic Code of Federal Regulations, Title 21",
      "publisher": "U.S. Government Publishing Office / National Archives",
      "licence": "Public domain",
      "url": "https://www.ecfr.gov/api/versioner/v1/full/2026-08-31/title-21.xml",
      "retrieved_at": "2026-09-07T18:25:51.549Z"
    }
  ],
  "citation_policy": "Cite as: Food Additive Index, \"Copper sulfate\", https://foodadditiveindex.com/additives/copper-sulfate. This site reports regulatory status and does not rate additives.",
  "generated_at": "2026-09-08T00:09:38.486Z"
}