Sulfuric Acid

CAS 7664-93-9·H2O4S·98.08 g/mol·13 listings across 7 jurisdictions.

Also known as Hydron;sulfate, Grossman's sealer, Hydrogen sulfate;hydron, sulfur acid … +15 more

CAS
7664-93-9
Mol. Weight
98.08000 g/mol
InChIKey
QAOWNCQODCNURD-UHFFFAOYSA-N
SMILES
O=S(=O)([O-])O.[H+]
PubChem CID
1118
PubChem CID
172995039
PubChem CID
22066174
PubChem CID
5152822

Regulatory
Status

13 entries across 7 jurisdictions. Sourced from EU, US, UK and international regulatory databases.

Overall compliance

Restricted — high concern

High-concern classification in 6 of 12 frameworks, across 7 jurisdictions.

United StatesUnited States[US]
EPA Toxic Release Inventory (TRI)
EPA TRI
Listed
View →

EPA's Toxics Release Inventory; a listing means facilities must publicly report releases and transfers of the substance.

{
  "notes": "Acid; combustion product",
  "category": "individually_listed",
  "cas_number": "7664-93-9",
  "chemical_name": "Sulfuric acid (aerosol)"
}
FDA Indirect Food Additives (21 CFR 170-199)
FDA 21CFR
Listed
View →

FDA indirect food additives (21 CFR); a listing means the substance is permitted in food-contact materials under defined conditions.

{
  "source": "FDA Indirect Additives (21 CFR 175-178)",
  "cas_number": "7664-93-9",
  "chemical_name": "SULFURIC ACID"
}
FDA Approved Drug Substances
FDA DRUG
Approved
View →

FDA-approved drug substances; a listing means the substance is an approved active pharmaceutical ingredient.

{
  "source": "openFDA NDC (active ingredients)",
  "cas_number": "",
  "chemical_name": "SULFURIC ACID",
  "product_count": 69,
  "active_ingredient": "SULFURIC ACID"
}
TSCA Inventory
TSCA
Listed
View →

The U.S. TSCA Inventory; a listing means the substance is an existing chemical permitted in U.S. commerce.

{
  "name": "Sulfuric acid",
  "flags": "",
  "status": "active",
  "cas_number": "7664-93-9",
  "risk_level": "low"
}
European UnionEuropean Union[EU]
CLP Regulation (EC) 1272/2008
CLP
Listed
View →

The EU's classification, labelling and packaging rules; a listing assigns the substance harmonised hazard classes such as carcinogenic, toxic, or corrosive.

{
  "source": "ECHA CLP Annex VI (harmonised C&L)",
  "index_no": "016-020-00-8",
  "ec_number": "231-639-5",
  "cas_number": "7664-93-9",
  "hazard_class": "Skin Corr. 1A",
  "chemical_name": "sulphuric acid ... %",
  "hazard_statements": "H314"
}
EU Drug Precursors Control List
EU DRUG PRECURSORS
Listed
View →
{
  "source": "EU Regulation (EC) 273/2004 + 111/2005 (drug precursors)",
  "category": 3,
  "cas_number": "7664-93-9",
  "chemical_name": "Sulfuric acid"
}
EU REACH Registered Substances
EU REACH REGISTERED
Listed
View →
{
  "source": "EU REACH Registered Substances (ECHA CHEM)",
  "ec_number": "231-639-5",
  "cas_number": "7664-93-9",
  "chemical_name": "Sulphuric acid"
}
United KingdomUnited Kingdom[UK]
GB Mandatory Classification & Labelling
GB MCL
Listed
View →

Great Britain's mandatory classification & labelling; a listing assigns the substance legally binding GB hazard classifications.

{
  "source": "GB MCL (HSE)",
  "ec_number": "231-639-5",
  "cas_number": "7664-93-9",
  "hazard_class": "Skin Corr. 1A",
  "chemical_name": "sulphuric acid ... %",
  "hazard_statements": "H314"
}
International[INTERNATIONAL]
IARC Carcinogen Classification
IARC
Listed
View →

The WHO/IARC carcinogen classification; a listing assigns the substance a cancer-hazard group, e.g. Group 1 (carcinogenic to humans).

{
  "source": "IARC Monographs",
  "volume": "",
  "cas_number": "7664-93-9",
  "iarc_group": "",
  "chemical_name": "Strong-inorganic-acid mists containing sulfuric acid (see Acid mists)",
  "evaluation_year": ""
}
CanadaCanada[CANADA]
Canada Domestic Substances List
CANADA DSL
Listed
View →

Canada's inventory of substances already in commerce; a listing means it can be manufactured or imported without new-substance notification.

{
  "source": "Canada Domestic Substances List (DSL)",
  "cas_number": "7664-93-9",
  "identifier": "7664-93-9",
  "publication": "Canada Gazette Part II, Vol. 128, No. 9, May 4, 1994, SOR/94-311 (http://central.bac-lac.gc.ca/.redirect?app=cangaz&id=14339&lang=eng)",
  "identifier_2": "",
  "chemical_name": "Sulfuric acid",
  "additional_information": "This substance is on the Domestic Substances List (DSL). \n \nThis substance was added to the DSL as an “Existing Substance” given that it meets the criteria set out in the Canadian Environmental Protection Act, 1999 for substances that were in commerce in Canada between 1984 and 1986."
}
Canada National Pollutant Release Inventory (NPRI)
CANADA NPRI
Listed
View →

Canada's pollutant-release inventory; a listing means facilities must publicly report releases and transfers of the substance.

{
  "source": "Canada National Pollutant Release Inventory (NPRI)",
  "cas_number": "7664-93-9",
  "identifier": "7664-93-9",
  "publication": "https://www.canada.ca/en/environment-climate-change/services/national-pollutant-release-inventory/report/legal-requirements-gazette-notices.html - Notices with respect to substances in the National Pollutant Release Inventory (NPRI)",
  "identifier_2": "",
  "chemical_name": "Sulphuric acid",
  "additional_information": "NPRI Part (threshold category): 1A\nThreshold for reporting to NPRI: 10 tonnes manufactured, processed or otherwise used\nConcentration threshold: 1%\nThis substance has been reportable to the NPRI since: 1993\n\nFor more information, see the NPRI website (https://www.canada.ca/en/services/environment/pollution-waste-management/national-pollutant-release-inventory.html)."
}
AustraliaAustralia[AUSTRALIA]
Australia Safe Work GHS Classification (HCIS)
AU SWA GHS
Listed
View →

Australia's official workplace hazard classification; a listing assigns the substance harmonised GHS health and physical-hazard categories.

{
  "source": "Safe Work Australia HCIS (via PubChem GHS Classification)",
  "cas_number": "7664-93-9",
  "pictograms": [],
  "pubchem_cid": "1118",
  "signal_word": "Danger",
  "chemical_name": "BOV",
  "hazard_statements": [
    "H314: Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]"
  ]
}
New ZealandNew Zealand[NEW ZEALAND]
Not ListedNot listed in any New Zealand framework on record.
FranceFrance[FRANCE]
Not ListedNot listed in any France framework on record.
SwitzerlandSwitzerland[SWITZERLAND]
Not ListedNot listed in any Switzerland framework on record.
NE-Atlantic[NE-ATLANTIC]
Not ListedNot listed in any NE-Atlantic framework on record.
JapanJapan[JAPAN]
Japan NITE GHS Classification
JP NITE GHS
Listed
View →

Japan's official GHS hazard classification (NITE); a listing assigns the substance harmonised GHS health and physical-hazard categories.

{
  "source": "Japan NITE-CMC (via PubChem GHS Classification)",
  "cas_number": "7664-93-9",
  "pictograms": [],
  "pubchem_cid": "1118",
  "signal_word": "Danger",
  "chemical_name": "BOV",
  "hazard_statements": [
    "H290: May be corrosive to metals [Warning Corrosive to Metals]",
    "H314: Causes severe skin burns and eye damage [Danger Skin corrosion/irritation]",
    "H318: Causes serious eye damage [Danger Serious eye damage/eye irritation]",
    "H330: Fatal if inhaled [Danger Acute toxicity, inhalation]",
    "H370: Causes damage to organs [Danger Specific target organ toxicity, single exposure]",
    "H372: Causes damage to organs through prolonged or repeated exposure [Danger Specific target organ toxicity, repeated exposure]",
    "H402: Harmful to aquatic life [Hazardous to the aquatic environment, acute hazard]",
    "H410: Very toxic to aquatic life with long lasting effects [Warning Hazardous to the aquatic environment, long-term hazard]",
    "H303: May be harmful if swallowed [Warning Acute toxicity, oral]"
  ]
}

Data as of 2026-10-26·All sources and refresh dates

Get this
via the API

One request returns the identity, identifiers and every listing above as JSON — the same data this page is rendered from.

bash
curl -H "X-API-Key: YOUR_KEY" \
  "https://www.chemply.io/api/v1/lookup?q=7664-93-9"

Each lookup costs one credit; a new account starts with 50 free credits, no card needed.
Read the API docs →·Get an API key →

Look up another substance

Any name, CAS number, InChIKey, SMILES or PubChem CID — free in the browser, no account needed.

[TRY]

Other popular substances