Sulfuric acid
CAS 7664-93-9H2O4S98.08 g/mol
Sulfuric acid is a sulfur oxoacid that consists of two oxo and two hydroxy groups joined covalently to a central sulfur atom. It has a role as a catalyst. It is a conjugate acid of a hydrogensulfate.
IUPAC: sulfuric acid
PubChem
Physical & Chemical Properties
| Melting Point | 50.65 °F (EPA, 1998) |
| Boiling Point | 554 °F at 760 mmHg (EPA, 1998) |
| Density | 1.841 (EPA, 1998) - Denser than water; will sink |
| Solubility | Miscible (NIOSH, 2024) |
| Vapor Pressure | 1 mmHg at 294.8 °F (EPA, 1998) |
| pH | 1 N solution = 0.3; 0.1 N solution = 1.2; 0.01 N solution = 2.1 |
| Appearance | Sulfuric acid is a colorless oily liquid. It is soluble in water with release of heat. It is corrosive to metals and tissue. It will char wood and most other organic matter on contact, but is unlikely to cause a fire. Density 15 lb / gal. Long term exposure to low concentrations or short term exposure to high concentrations can result in adverse health effects from inhalation. It is used to make fertilizers and other chemicals, in petroleum refining, in iron and steel production, and for many other uses. Rate of onset: Immediate Persistence: Hours, days Odor threshold: Source/use/other hazard: Battery/dyes/paper/glue/metals industries; volcanic gas; toxic fumes when heated. |
Data: PubChem · Last updated: 4/20/2026
GHS Classification
Danger
Pictograms
⚗️
Corrosion
Corrosive to metals, skin, eyes
GHS05
Hazard Statements
H314Causes severe skin burns and serious eye damage
Precautionary Statements
P280Wear protective gloves/protective clothing/eye protection/face protection
P301+P330+P331IF SWALLOWED: rinse mouth. Do NOT induce vomiting
Hazard Classes
Skin corrosion — Cat. 1A
ECHA Classification & Labelling Inventory · Last updated: 4/20/2026
Regulatory Compliance
TSCA
Listed
note: Status based on EPA TSCA Active Inventory · inventory name: TSCA Chemical Substance Inventory
View sourceGlobal Trade Intelligence
No trade flow data available for this chemical.
HS Code(s): 2807
Data: UN Comtrade
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