Nitric acid
- CAS NO.：7697-37-2
- Empirical Formula: HNO3
- Molecular Weight: 63.01284
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-03-30 16:09:24
What is Nitric acid?
Definition
ChEBI: Nitric acid is a nitrogen oxoacid of formula HNO3 in which the nitrogen atom is bonded to a hydroxy group and by equivalent bonds to the remaining two oxygen atoms. It has a role as a protic solvent and a reagent. It is a conjugate acid of a nitrate.
Properties of Nitric acid
| Melting point: | -41.6 °C |
| Boiling point: | 83 °C |
| Density | 1.55 g/cm3 |
Safety information for Nitric acid
| Signal word | Danger |
| Pictogram(s) |
 Flame Over Circle Oxidizers GHS03  Corrosion Corrosives GHS05  Skull and Crossbones Acute Toxicity GHS06 |
| GHS Hazard Statements |
H272:Oxidising liquids;Oxidising solids H290:Corrosive to Metals H314:Skin corrosion/irritation H331:Acute toxicity,inhalation |
| Precautionary Statement Codes |
P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P220:Keep/Store away from clothing/…/combustible materials. P280:Wear protective gloves/protective clothing/eye protection/face protection. P303+P361+P353:IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. |
Computed Descriptors for Nitric acid
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