{
  "$schema": "https://foodadditiveindex.com/api/v1/schema.json",
  "id": "https://foodadditiveindex.com/additives/ammonium-sulfate",
  "slug": "ammonium-sulfate",
  "name": "Ammonium sulfate",
  "identifiers": {
    "e_number": "E517",
    "ins_number": null,
    "cas_number": "7783-20-2",
    "inchikey": "BFNBIHQBYMNNAN-UHFFFAOYSA-N",
    "pubchem_cid": 6097028
  },
  "functional_class": null,
  "summary": "Ammonium sulfate is a dough conditioner and yeast nutrient in bread making, supplying the nitrogen the yeast needs to work quickly.",
  "derivation_summary": "Produced by reacting ammonia with sulfuric acid. It is also a major fertiliser, made at very large scale.",
  "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 184.1143",
            "url": "https://www.ecfr.gov/current/title-21/section-184.1143"
          },
          "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": "7783-20-2",
      "type": "cas",
      "source": "ecfr"
    },
    {
      "name": "Actamaster",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "AMMONIUM SULFATE",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Ammonium sulfate ((NH4)2SO4)",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Ammonium sulfate (2:1)",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Ammonium sulfate (NF)",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Ammonium sulfate 2M solution in water (+/- 0.2M)",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Ammonium Sulfate ACS grade",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Ammonium sulfate, 99.99% metals basis",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Ammonium sulfate, 99.999% (metals basis)",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Ammonium sulfate, CP,98%",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Ammonium Sulfate, Trace metals grade",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Ammonium sulfate, ultrapure",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Ammonium sulphate",
      "type": "common",
      "source": "openfoodtox"
    },
    {
      "name": "AMMONIUM SULPHATE (2:1)",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Ammonium sulphate,>/=99.0%,AR",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Ammoniumsulfate",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Caswell No. 048",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Diammonium sulfate",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Diammonium sulphate",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "diazanium sulfate",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Dolamin",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "E 517",
      "type": "common",
      "source": "openfoodtox"
    },
    {
      "name": "EPA Pesticide Chemical Code 005601",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "HSDB 471",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Mascagnite",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "SU46BAM238",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Sulfate Anion Standard Solution",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Sulfate, ammonium",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Sulfatom ammoniya",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Sulfuric acid ammonium salt (1:2)",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "Sulfuric acid diammonium salt",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "sulphate of ammonia",
      "type": "common",
      "source": "pubchem"
    },
    {
      "name": "E517",
      "type": "e_number",
      "source": "openfoodtox"
    },
    {
      "name": "diammonium sulfate",
      "type": "iupac",
      "source": "openfoodtox"
    },
    {
      "name": "Ammonium sulfate",
      "type": "label",
      "source": "ecfr"
    }
  ],
  "hazard_reference_values": [
    {
      "type": "ADI",
      "value": 12.5,
      "value_text": null,
      "unit": "mg/kg bw/day",
      "population": "consumers",
      "assessing_body": "EFSA",
      "year": null,
      "opinion": null
    }
  ],
  "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, \"Ammonium sulfate\", https://foodadditiveindex.com/additives/ammonium-sulfate. This site reports regulatory status and does not rate additives.",
  "generated_at": "2026-09-08T00:09:38.414Z"
}