Nitric acid 67 % is a highly corrosive mineral acid and inorganic compound with the formula HNO3. It is virtually colourless. However, older samples may have a slight yellow cast due to decomposition into oxides of nitrogen.
| CAS Number: | 7697-37-2 |
| UN Number: | 2031 |
| Hazard Class: | 8 |
| Packing Group: | I |
Most commercially available nitric acid has a concentration of 68% in water. When the solution contains more than 86% HNO3, it is referred to as fuming nitric acid. Depending on the amount of nitrogen dioxide present, fuming nitric acid is further characterised as red-fuming nitric acid at concentrations above 86% or white-fuming nitric acid at concentrations above 95%.
Physical properties of Nitric Acid 67%
Physical State:
Liquid
Appearance:
Colourless to slightly yellow
Odor:
Pungent
Odor Threshold:
0.75-2.5 mg/m3
pH:
1
Melting Point / Range:
-41C (HNO3 100%, 1013 hPa), -29C (HNO3 65% 1013 hPa)
Boiling Point / Range:
83C (HNO3 100% 1013 hPa), 122C (HNO3 100% 1013 hPa)
Molecular Formula:
No information available
Molecular Weight:
No information available
Safety information for Nitric Acid (67%)
All safety information for Nitric Acid 67 % can be found within our pdf above. This includes measures for first aid, fire-fighting, accidental release, handling and storage and personal protection.
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