Hydrochloric acid
CAS 7647-01-0ClH36.46 g/mol
Chlorine atom is a halogen. It has a role as a micronutrient.
IUPAC: chlorane
PubChem
Physical & Chemical Properties
| Melting Point | -174.6 °F (Melting point is -13.7 °F for a 39.17% weight/weight solution.) (EPA, 1998) |
| Boiling Point | 123 °F at 760 mmHg (USCG, 1999) |
| Density | 1.05 at 59 °F for 10.17% weight/weight solution (EPA, 1998) - Denser than water; will sink |
| Solubility | 82.3 g/100 g at 32 °F (NTP, 1992) |
| Vapor Pressure | 413.6 mmHg (USCG, 1999) |
| Appearance | Hydrochloric acid, solution is a colorless watery liquid with a sharp, irritating odor. Consists of hydrogen chloride, a gas, dissolved in water. Sinks and mixes with water. Produces irritating vapor. (USCG, 1999) |
Data: PubChem · Last updated: 4/20/2026
GHS Classification
Danger
Pictograms
⚗️
Corrosion
Corrosive to metals, skin, eyes
GHS05
❗
Exclamation Mark
Irritation, sensitization, narcotic effects
GHS07
Hazard Statements
H314Causes severe skin burns and serious eye damage
H335May cause respiratory irritation
Precautionary Statements
P260Do not breathe mist/vapours/spray
P280Wear protective gloves/protective clothing/eye protection/face protection
P301+P330+P331IF SWALLOWED: rinse mouth. Do NOT induce vomiting
P303+P361+P353IF ON SKIN: Take off immediately all contaminated clothing. Rinse skin with water/shower
Hazard Classes
Skin corrosion — Cat. 1ASpecific target organ toxicity - single exposure — Cat. 3
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): 2806
Data: UN Comtrade
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