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A6187212

Nitric acid , GR,65-68% , 7697-37-2

Synonym(s):
Hydrogen Nitrate, Azotic Acid,Aqua Fortis, Aquafortis;Nitric acid solution

CAS NO.:7697-37-2

Empirical Formula: HNO3

Molecular Weight: 63.01

MDL number: MFCD00011349

EINECS: 231-714-2

Update time: 2022-07-08

PRODUCT Properties

Melting point: -42 °C
Boiling point: 120.5 °C(lit.)
Density  1.41 g/mL at 20 °C
vapor density  1 (vs air)
vapor pressure  8 mm Hg ( 20 °C)
Flash point: 120.5°C
storage temp.  Store at +2°C to +25°C.
solubility  Miscible with water.
pka -1.3(at 25℃)
form  Liquid, Double Sub-Boiling Quartz Distillation
Specific Gravity d 20/4 1.4826
color  colorless to deep yellow
PH Range 1
Odor Suffocating fumes detectable at <5.0 ppm
PH 3.01(1 mM solution);2.04(10 mM solution);1.08(100 mM solution);
Water Solubility  >100 g/100 mL (20 ºC)
Sensitive  Hygroscopic
Merck  14,6577
Exposure limits TLV-TWA 2 ppm (5 mg/m3) (ACGIH, MSHA, OSHA, and NIOSH); STEL 4 ppm (~10 mg/m3) (ACGIH).
Dielectric constant 55.0(14℃)
LogP -0.773 (est)

Description and Uses

Nitric acid is a colorless, corrosive liquid that is the most common nitrogen acid. It has been used for hundreds of years. Nitric acid is a mineral acid that was called spirit of nitre and aqua fortis, which means strong water.

Fuming nitric acid is named because of the fumes emitted by acid when it combines with moist air. Fuming nitric acid is highly concentrated and is labeled either red fuming nitric acid or white fuming nitric acid. Red fuming nitric acid, as the name implies, emits a reddishbrown fume on exposure to air. The color comes from nitrogen dioxide, which is liberated on exposure to air. The nitric acid concentration of red fuming nitric acid is approximately 85% or greater, with a substantial amount of dissolved nitrogen dioxide. White fuming nitric acid is highly concentrated anhydrous nitric acid with concentrations of 98–99%; the remaining 1–2% is water and nitrogen dioxide. Most commercial grade nitric acid has a concentration of between 50% and 70%.

Nitric acid is an important starting material for the production of fertilizers and chemicals. Diluted nitric acid is used for dissolving and etching metals Product Data Sheet

Safety

Symbol(GHS) 
GHS03,GHS05,GHS06
Signal word  Danger
Hazard statements  H272-H290-H314-H331
Precautionary statements  P210-P220-P280-P303+P361+P353-P304+P340+P310-P305+P351+P338
Hazard Codes  C,O,Xi,T+
Risk Statements  8-35-34-20-41-37/38-36/38-26/27
Safety Statements  23-26-36-45-36/37/39-39-60-28
OEB B
OEL TWA: 2 ppm (5 mg/m3), STEL: 4 ppm (10 mg/m3)
RIDADR  UN 3264 8/PG 3
WGK Germany  1
RTECS  QU5900000
8
TSCA  Yes
HS Code  2808 00 00
HazardClass  8
PackingGroup  II
Toxicity LC50 inhal (rat)
2500 ppm (1 h)
PEL (OSHA)
2 ppm (5 mg/m3)
TLV-TWA (ACGIH)
2 ppm (5.2 mg/m3)
STEL (ACGIH)
4 ppm (10 mg/m3)
IDLA 25 ppm

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