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7697-37-2

Basic Information
CAS No.: 7697-37-2
Name: Nitric acid
Molecular Structure:
Molecular Structure of 7697-37-2 (Nitric acid)
Formula: HNO3
Molecular Weight: 63.01 .
Synonyms: Aquafortis;Azotic acid;Fumic acid;Hydrogen nitrate;NSC 147791;NSC 15203;Nital;Nitric acid (HONO2);Nitryl hydroxide;
EINECS: 231-714-2
Density: 1.623 g/cm3
Melting Point: - 42 °C
Boiling Point: 83 °C at 760 mmHg
Flash Point: 120.5°C
Solubility: H2O: >100 g/100 mL (20 °C)
Appearance: Colourless clear liquid
Hazard Symbols: CorrosiveC,OxidizingO
Risk Codes: 8-35-34-20
Safety: 23-26-36-45
Transport Information: UN 3264 8/PG 3
PSA: 66.05000
LogP: 0.17550
Synthetic route

silver nitrate

A

7697-37-2

nitric acid

B

7440-22-4

silver

Conditions
ConditionsYield
With H nitrate, in dild. soln., is completely reacting with Pd, satd. with H, at 16 °C in 24 hours to Ag and HNO3;;A 100%
B 100%
With H

ceric ammonium nitrate

3449-05-6

2-(salicylideneamino)thiophenol

A

ammonium nitrate

B

240814-62-4

(OC6H4CHNC6H4S)Ce(NO3)2(H2O)

C

7697-37-2

nitric acid

Conditions
ConditionsYield
With ammonium hydroxide In ethanol; water addn. of hot soln. of Schiff base in EtOH to soln. of Ce salt in EtOH (ratio 1 : 1), addn. of H2O and EtOH (to 85% EtOH), pH adjusting to 5.0 - 6.0 (NH4OH), refluxing (2 h), concn. (vac.), crystn. on cooling (over night); filtration, washing (EtOH), recrystn. (hot DMF/EtOH), washing (EtOH, Et2O), drying (vac.); elem. anal.;A n/a
B 90%
C n/a

aluminum trihydroxide

1333-84-2, 1344-28-1

aluminum oxide

7631-99-4

sodium nitrate

A

1302-42-7

sodium aluminate

B

7697-37-2

nitric acid

Conditions
ConditionsYield
heating; it attacks vessel of iron or platinum and glass or china;A n/a
B 89%
119-65-3

isoquinoline

uranyl nirate hexahydrate

141-82-2

malonic acid

7722-84-1

dihydrogen peroxide

A

187455-26-1

UO(O2)(CH2(COO)2)(C9H7N)2

B

7697-37-2

nitric acid

Conditions
ConditionsYield
In ethanol; water addn. of org. acid in EtOH to aq. soln. of metal salt, cooling, addn. ofsoln. of isoquinoline in EtOH, addn. of aq. H2O2 (30 %), stirring (30 m in; pptn.); filtration, washing (water, EtOH), purification by TLC, drying (vac., over silica gel); elem. anal.;A 79%
B n/a
91-22-5

quinoline

uranyl nirate hexahydrate

homophthalic acid

7722-84-1

dihydrogen peroxide

A

UO(4+)*O2(2-)*C8H4O4(2-)*2C9H7N=UO(O2)(C6H4(COO)2)(C9H7N)2

B

7697-37-2

nitric acid

Conditions
ConditionsYield
In ethanol; water addn. of org. acid in EtOH to aq. soln. of metal salt, cooling, addn. ofsoln. of quinoline in EtOH, addn. of aq. H2O2 (30 %), stirring (30 min; pptn.); filtration, washing (water, EtOH), purification by TLC, drying (vac., over silica gel); elem. anal.;A 76%
B n/a
119-65-3

isoquinoline

uranyl nirate hexahydrate

homophthalic acid

7722-84-1

dihydrogen peroxide

A

UO(4+)*O2(2-)*C8H4O4(2-)*2C9H7N=UO(O2)(C6H4(COO)2)(C9H7N)2

B

7697-37-2

nitric acid

Conditions
ConditionsYield
In ethanol; water addn. of org. acid in EtOH to aq. soln. of metal salt, cooling, addn. ofsoln. of isoquinoline in EtOH, addn. of aq. H2O2 (30 %), stirring (30 m in; pptn.); filtration, washing (water, EtOH), purification by TLC, drying (vac., over silica gel); elem. anal.;A 72%
B n/a
91-22-5

quinoline

zirconium(IV) nitrate hexahydrate

141-82-2

malonic acid

7722-84-1

dihydrogen peroxide

A

187455-21-6

Zr(O2)(CH2(COO)2)(C9H7N)2

B

7697-37-2

nitric acid

Conditions
ConditionsYield
In ethanol; water addn. of org. acid in EtOH to aq. soln. of metal salt, cooling, addn. ofsoln. of quinoline in EtOH, addn. of aq. H2O2 (30 %), stirring (30 min; pptn.); filtration, washing (water, EtOH), purification by TLC, drying (vac., over silica gel); elem. anal.;A 72%
B n/a
91-22-5

quinoline

uranyl nirate hexahydrate

141-82-2

malonic acid

7722-84-1

dihydrogen peroxide

A

187455-25-0

UO(O2)(CH2(COO)2)(C9H7N)2

B

7697-37-2

nitric acid

Conditions
ConditionsYield
In ethanol; water addn. of org. acid in EtOH to aq. soln. of metal salt, cooling, addn. ofsoln. of quinoline in EtOH, addn. of aq. H2O2 (30 %), stirring (30 min; pptn.); filtration, washing (water, EtOH), purification by TLC, drying (vac., over silica gel); elem. anal.;A 70%
B n/a
119-65-3

isoquinoline

zirconium(IV) nitrate hexahydrate

141-82-2

malonic acid

7722-84-1

dihydrogen peroxide

A

187455-22-7

Zr(O2)(CH2(COO)2)(C9H7N)2

B

7697-37-2

nitric acid

Conditions
ConditionsYield
In ethanol; water addn. of org. acid in EtOH to aq. soln. of metal salt, cooling, addn. ofsoln. of isoquinoline in EtOH, addn. of aq. H2O2 (30 %), stirring (30 m in; pptn.); filtration, washing (water, EtOH), purification by TLC, drying (vac., over silica gel); elem. anal.;A 70%
B n/a
119-65-3

isoquinoline

zirconium(IV) nitrate hexahydrate

homophthalic acid

7722-84-1

dihydrogen peroxide

A

Zr(4+)*O2(2-)*C8H4O4(2-)*2C9H7N=Zr(O2)(C6H4(COO)2)(C9H7N)2

B

7697-37-2

nitric acid

Conditions
ConditionsYield
In ethanol; water addn. of org. acid in EtOH to aq. soln. of metal salt, cooling, addn. ofsoln. of isoquinoline in EtOH, addn. of aq. H2O2 (30 %), stirring (30 m in; pptn.); filtration, washing (water, EtOH), purification by TLC, drying (vac., over silica gel); elem. anal.;A 68%
B n/a
91-22-5

quinoline

zirconium(IV) nitrate hexahydrate

homophthalic acid

7722-84-1

dihydrogen peroxide

A

Zr(4+)*O2(2-)*C8H4O4(2-)*2C9H7N=Zr(O2)(C8H4O4)(C9H7N)2

B

7697-37-2

nitric acid

Conditions
ConditionsYield
In ethanol; water addn. of org. acid in EtOH to aq. soln. of metal salt, cooling, addn. ofsoln. of quinoline in EtOH, addn. of aq. H2O2 (30 %), stirring (30 min; pptn.); filtration, washing (water, EtOH), purification by TLC, drying (vac., over silica gel); elem. anal.;A 67%
B n/a
326-91-0

1,1,1-trifluoro-4-(2-thienyl)butane-2,4-dione

europium(III) nitrate

23978-55-4

1,4,10,13-tetraoxa-7,16-diazacyclooctadecane

A

2H(1+)*2Eu(CF3C(O)CHC(O)C4H3S)4(1-)*C12H26N2O4=H2[Eu(CF3C(O)CHC(O)C4H3S)4]2*C12H26N2O4

B

7697-37-2

nitric acid

Conditions
ConditionsYield
In water; toluene dropwise addn. of soln. of Eu-salt in H2O to soln. of macrocycle and diketone (stirring), sepd. of org. phase after 30 min, pptn. on addn. of cyclohexane to org. phase; collection, recrystn. (toluene/cyclohexane 1/1), drying (over P2O5, vac., 5 h); elem. anal.;A 62%
B n/a
7664-41-7

ammonia

7697-37-2

nitric acid

Conditions
ConditionsYield
With oxygen NH3-air mixture,at gently red heat;60%
With oxygen; Sr(2+)*PbO3(2-)*Sr(2+)*MnO4(2-)=SrPbO3*SrMnO4 byproducts: nitrogen oxides; above 500 °C,NH3-air mixture,overall yield:from 90%;
With oxygen; Ba(2+)*PbO3(2-)*Ba(2+)*MnO4(2-)=BaPbO3*BaMnO4 byproducts: nitrogen oxides; above 500 °C,NH3-air mixture,overall yield:from 90%;

[Fe3O(CH3COO)6(H2O)3]·(NO3)·4H2O

77-95-2

D-(-)-quinic acid

A

[Fe7O3(OH)3(C7H10O6)6]·20.5H2O

B

7697-37-2

nitric acid

C

64-19-7

acetic acid

Conditions
ConditionsYield
at 4 - 20℃; pH=2.5;A 56%
B n/a
C n/a
7647-01-0

hydrogenchloride

10102-03-1

dinitrogen pentoxide

A

7697-37-2

nitric acid

B

7782-50-5

chlorine

C

Nitryl chloride

Conditions
ConditionsYield
In neat (no solvent) at 213 K; purified from N2O5 and nitric acid by distillation at 213 K;A n/a
B 2%
C n/a
5465-96-3

2-nitroamino-1,3-diazacyclopent-2-ene

7697-37-2

nitric acid

Conditions
ConditionsYield
at 0℃; Rate constant; in festen und fluessigen H2SO4-H2O-Gemischen <84.5-86.4%ig>.Hydrolysis;
53360-90-0

nitro-tetrahydropyrimidin-2-ylidene-amine

7664-93-9

sulfuric acid

64-19-7

acetic acid

7697-37-2

nitric acid

Conditions
ConditionsYield
at 25℃; Rate constant;
53360-90-0

nitro-tetrahydropyrimidin-2-ylidene-amine

H2SO4 <68-78.6% >

H2SO4 <68-78.6% >

7697-37-2

nitric acid

Conditions
ConditionsYield
at 25℃; Rate constant;
100130-44-7

(4-methyl-4,5-dihydro-1(3)H-imidazol-2-yl)-nitro-amine

H2SO4 <76.1-87.5 % >

H2SO4 <76.1-87.5 % >

7697-37-2

nitric acid

Conditions
ConditionsYield
at 25℃; Rate constant; Hydrolysis;
5465-96-3

2-nitroamino-1,3-diazacyclopent-2-ene

H2SO4 <76-93% >

H2SO4 <76-93% >

7697-37-2

nitric acid

Conditions
ConditionsYield
at 25℃; Rate constant; Hydrolysis;
100130-44-7

(4-methyl-4,5-dihydro-1(3)H-imidazol-2-yl)-nitro-amine

H2SO

H2SO

7697-37-2

nitric acid

Conditions
ConditionsYield
at 0℃; Rate constant; in festen und fluessigen Gemischen <84.5%ig>.Hydrolysis;
53360-90-0

nitro-tetrahydropyrimidin-2-ylidene-amine

HClO4 <59.6-67% >

HClO4 <59.6-67% >

7697-37-2

nitric acid

Conditions
ConditionsYield
at 25℃; Rate constant;
60-27-5

creatinine

A

151201-39-7

methyl-imidazolidinetrione-5-oxime

B

7697-37-2

nitric acid

Conditions
ConditionsYield
With sodium nitrite
5-isonitroso-creatinine

5-isonitroso-creatinine

A

151201-39-7

methyl-imidazolidinetrione-5-oxime

B

7697-37-2

nitric acid

Conditions
ConditionsYield
With sodium nitrite
88-89-1

2,4,6-Trinitrophenol

persulfate

persulfate

A

74-90-8

hydrogen cyanide

B

7697-37-2

nitric acid

88-89-1

2,4,6-Trinitrophenol

ammonium persulfate

ammonium persulfate

A

74-90-8

hydrogen cyanide

B

124-38-9

carbon dioxide

C

7697-37-2

nitric acid

110-86-1

pyridine

sodium persulfate

sodium persulfate

acid

acid

A

124-38-9

carbon dioxide

B

7664-41-7

ammonia

C

7697-37-2

nitric acid

Conditions
ConditionsYield
at 70 - 80℃; es erfolgt Oxidation;
871932-89-7

5-chloro-4-[cyclohexyl-(2,2,2-trifluoroacetyl)amino]-2-methoxybenzoic acid methyl ester

7697-37-2

nitric acid

871932-90-0

5-chloro-4-[cyclohexyl-(2,2,2-trifluoroacetyl)amino]-2-methoxy-3-nitrobenzoic acid methyl ester

Conditions
ConditionsYield
Stage #1: 5-chloro-4-[cyclohexyl-(2,2,2-trifluoroacetyl)amino]-2-methoxybenzoic acid methyl ester; nitric acid at -40 - -20℃; for 2h;
Stage #2: With sodium hydroxide In water
100%
dysprosium((III) oxide

dysprosium((III) oxide

7697-37-2

nitric acid

dysprosium(III) nitrate hydrate

Conditions
ConditionsYield
at 80℃;100%
In nitric acid aq. HNO3; dissolving metal oxide in concd. HNO3, heating; evapn. on water bath, dissolving in water;
In nitric acid aq. HNO3; by treating the metal oxide with dil. HNO3; the soln. was evapd. on a steam bath; the residue was dissolved in water, conced. to a viscous mass, cooled and kept in a desiccator after breaking up any lumps;

europium(III) oxide

7697-37-2

nitric acid

europium(III) nitrate hydrate

Conditions
ConditionsYield
at 80℃;100%
In nitric acid aq. HNO3; Eu2O3 treated with concd. HNO3; excess HNO3 evapd.;
In nitric acid aq. HNO3; dissolving metal oxide in concd. HNO3, heating; evapn. on water bath, dissolving in water;

yttrium(III) oxide

7697-37-2

nitric acid

yttrium(III) nitrate hydrate

Conditions
ConditionsYield
at 80℃;100%
In water react. metal oxide with 6N HNO3; evapn. at 100°C;
In nitric acid aq. HNO3; by treating the metal oxide with dil. HNO3; the soln. was evapd. on a steam bath; the residue was dissolved in water, conced. to a viscous mass, cooled and kept in a desiccator after breaking up any lumps;
In nitric acid aq. HNO3; dissolving of Y2O3 in excess amt. of aq. nitric acid;
7697-37-2

nitric acid

7664-41-7

ammonia

Conditions
ConditionsYield
In water Electrolysis; Cu-cathode, in presence of H2SO4;;100%
With aluminium In water at elevated pressure;;0%
With aluminium In water only small amounts of NH3 in dild. HNO3 (5%-20%) at atmospheric pressure;;
7697-37-2

nitric acid

7440-05-3

palladium

palladium (II) nitrate

Conditions
ConditionsYield
With sulfur trioxide pyridine complex at 25 - 100℃; for 180h; Sealed tube;100%
In nitric acid in presence of air;
In nitric acid byproducts: N-oxide; by heating; in presence of air;

terbium(III) oxide

7697-37-2

nitric acid

H6N3O12Tb

Conditions
ConditionsYield
at 80℃;100%

lead(II) tungstate

ammonium hydroxide

7697-37-2

nitric acid

A

tungsten(VI) oxide

B

lead(II) oxide

Conditions
ConditionsYield
In nitric acid aq. HNO3; PbWO4 dissolved in aq. HNO3 (10 wt %) at 75°C; isothermal holdingtime was 2 h; ppt. filtered off; washed (aq. HNO3); calcined at 700°C (WO3 was obtained); to filtrate contg. Pb(NO3)2 added aq. NH4OH with stirring; final pH was 8.9; ppt. diltered off; dried; calcined at 800°C;A 99.9%
B 93.6%
7440-36-0

antimony

7697-37-2

nitric acid

antimony pentoxide

Conditions
ConditionsYield
In water byproducts: NO2; Sb powder was covered with concd. nitric acid, heated under an open hood and over a bunsen burner flame, solid was filtered, washed with water,left to dry, heated in open beaker over a bunsen burner flame;99.729%
7697-37-2

nitric acid

62-76-0

sodium oxalate

7631-99-4

sodium nitrate

Conditions
ConditionsYield
In water byproducts: oxalic acid; between 15 and 65°C;; pure NaNO3;;99%

(CH3)3SiCHCH2(SFe(CO)3)2

7697-37-2

nitric acid

A

7782-61-8

ferric nitrate

B

754-05-2

ethenyltrimethylsilane

Conditions
ConditionsYield
In nitric acid byproducts: H2SO4, NO, CO; stirring for 0.5 h at 25°C; condensing silane in a trap cooled with solid CO2, treating aq. layer with NaOH, evapn. to dryness, IR;A n/a
B 99%

sodium bismuthate

americium(3+)

7697-37-2

nitric acid

americyl

Conditions
ConditionsYield
In further solvent(s) the mixt. of NaBiO3 and Am(3+) in 0.1 M nitric acid was agitated at roomtemp.; detected by UV spectra and γ-ray spectroscopy;99%

sodium bismuthate

americium(3+)

7697-37-2

nitric acid

(243)AmO2(1+)

Conditions
ConditionsYield
In further solvent(s) the mixt. of NaBiO3 and Am(3+) in 0.1 M nitric acid was heated at 80°C; detected by UV spectra and γ-ray spectroscopy;99%

bismuth (III) nitrate pentahydrate

7697-37-2

nitric acid

7782-68-5

iodic acid

1316858-53-3

Bismuth oxide iodate

Conditions
ConditionsYield
In water High Pressure; Bi(NO3)3, HIO3, HNO3 were heated in autoclave to 200°C, held for 1 week, cooled slowly, 6°C/h, to room temp.; filtered, washed with distilled water;99%
7440-69-9

bismuth

7697-37-2

nitric acid

bismuth (III) nitrate pentahydrate

Conditions
ConditionsYield
With water; ammonium carbonate In nitric acid solution of Bi in HNO3 (36 Be); vigorous reaction, repeated addition of H2O;; filtration through an asbestos filter and evaporation of the filtrate; crystallisation and washing with H2O (containing a small amount of HNO3); drying at 25°C; addition of (NH4)2CO3 to the end liquors and formation of Bi nitrate with HNO3;;98%
With H2O; (NH4)2CO3 In nitric acid solution of Bi in HNO3 (36 Be); vigorous reaction, repeated addition of H2O;; filtration through an asbestos filter and evaporation of the filtrate; crystallisation and washing with H2O (containing a small amount of HNO3); drying at 25°C; addition of (NH4)2CO3 to the end liquors and formation of Bi nitrate with HNO3;;98%
With water; oxygen In nitric acid byproducts: N oxides; addition of warm Bi grains under reflux to HNO3 and O2; absorption of the formed N oxides after oxidation in H2O and returning back to the reaction mixture;;
126-33-0

sulfolane

314-41-0

1,2,3,5-tetrafluoro-4-nitrobenzene

7697-37-2

nitric acid

20002-14-6

2,4,5,6-Tetrafluoro-1,3-dinitrobenzene

Conditions
ConditionsYield
With boron trifluoride at 65-70°C 7 d;98%
With BF3 at 65-70°C 7 d;98%

barium(II) nitrate

4C12H28N(1+)*4H2O*V4O12(4-)

7697-37-2

nitric acid

67-68-5

dimethyl sulfoxide

4Ba(2+)*14C2H6OS*NO3(1-)*V14O38(7-)

Conditions
ConditionsYield
Stage #1: barium(II) nitrate; 4C12H28N(1+)*4H2O*V4O12(4-); dimethyl sulfoxide at 70℃; for 4h;
Stage #2: nitric acid at 20℃; for 2h;
98%

N,N’-trans-cyclohexane-1,4-diylbis(pyrrolidin-2-one)

7697-37-2

nitric acid

uranium(4+)

N6O18U*2C14H23N2O2(1-)*2H(1+)

Conditions
ConditionsYield
With hydrazine In water98%

rac-N,N’-trans-cyclohexane-1,2-diylbis(pyrrolidin-2-one)

7697-37-2

nitric acid

uranium(4+)

N6O18U*2C14H23N2O2(1-)*2H(1+)

Conditions
ConditionsYield
With hydrazine In water98%

Au(N,N'-bis(2,6-diisopropyl)imidazol-2-ylidene)(Bpin)

7697-37-2

nitric acid

Au(IPr)(ONO2)

Conditions
ConditionsYield
In benzene-d6 at 20℃; for 0.0833333h; Glovebox;98%

thallium(I) nitrate

Nd(W5O18)2(9-)

7697-37-2

nitric acid

6Tl(1+)*3H(1+)*Nd(W5O18)2(9-)*7.5H2O=Tl6H3[Nd(W5O18)2]*7.5H2O

Conditions
ConditionsYield
In water HNO3 added to Nd/H(+)=2, Tl salt added dropwise at 25°C with vigorous stirring, kept for 24 h; ppt. filtered, washed (cold water), dried air; elem. anal.;97.78%
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  • Nitric acid    CAS: 7697-37-2

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    Nitric acid CAS: 7697-37-2

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*Required Fields

Consensus Reports

EPA Extremely Hazardous Substances List. Reported in EPA TSCA Inventory. EPA Genetic Toxicology Program. Community Right-To-Know List.

Standards and Recommendations

OSHA PEL: TWA 2 ppm; STEL 4 ppm
ACGIH TLV: TWA 2 ppm; STEL 4 ppm
DFG MAK: 2 ppm (5.2 mg/m3)
NIOSH REL: (Nitric Acid) TWA 2 ppm
DOT Classification:  8; Label: Corrosive, Oxidizer, Poison

Analytical Methods

For occupational chemical analysis use OSHA: #ID-127 or NIOSH: Acids, Inorganic, 7903.

Specification

Nitric acid(CAS NO.7697-37-2) is a colorless, highly corrosive liquid and a very powerful oxidizing agent that in the highly pure state is not entirely stable and must be prepared from its azeotrope by distillation with concentrated sulfuric acid. Nitric acid gradually yellows because of decomposition to nitrogen dioxide. Solutions containing more than 80% nitric acid are called fuming nitric acids. It also can be called Acide nitrique; Acido nitrico; Acidum nitricum; Aqua fortis; Azotic acid; Azotowy kwas; Engraver's acid; Hydrogen nitrate; Kyselina dusicne; Nital; Nitric acid; Nitrous fumes; Nitryl hydroxide; Red fuming nitric acid; Salpetersaeure; Salpetersaure; Salpeterzuuroplossingen; UNII-411VRN1TV4.

Physical properties about Nitric acid are: (1)ACD/LogP: -0.773; (2)ACD/LogD (pH 5.5): -0.77; (3)ACD/LogD (pH 7.4): -0.77; (4)ACD/BCF (pH 5.5): 1.00 ; (5)ACD/BCF (pH 7.4): 1.00; (6)#H bond acceptors:4 ; (7)#H bond donors: 1; (8)Index of Refraction: 1.409; (9)Molar Refractivity: 9.606 cm3; (10)Molar Volume: 38.82 cm3; (11)Polarizability: 3.808 10-24cm3; (12)Surface Tension: 58.6520004272461 dyne/cm; (13)Density: 1.623 g/cm3 ; (14)Enthalpy of Vaporization: 37.722 kJ/mol; (15)Boiling Point: 83 °C at 760 mmHg; (16)Vapour Pressure: 49.8279991149902 mmHg at 25°C

Preparation of Nitric acid:
Nitric acid is made by reacting nitrogen dioxide (NO2) with water.
3 NO2 + H2O → 2 HNO3 + NO
For many years it was made by the reaction of sulfuric acid and saltpeter, but this method is no longer used.
NaNO3 + H2SO4 → NaHSO4 + HNO3
It is now manufactured by combusting ammonia in air in the presence of a (platinum or other noble metal) catalyst, and the nitrogen oxides thus formed are oxidized further and absorbed in water to form nitric acid.
NH3 + 2O2 → HNO3 + H2O

Uses of Nitric acid: 
1. A solution of Nitric acid and alcohol, Nital, is used for etching of metals to reveal the microstructure.Nitric acid is also used in explosives, and is key to the manufacture of Nitroglycerin and RDX.
2. In a low concentration, it is often used to artificially age pine and maple. The color produced is a grey-gold very much like very old wax or oil finished wood (wood finishing).

You can still convert the following datas into molecular structure:
(1)InChI=1S/HNO3/c2-1(3)4/h(H,2,3,4);
(2)InChIKey=GRYLNZFGIOXLOG-UHFFFAOYSA-N;
(3)Smiles[N+](=O)(O)[O-]

The toxicity data is as follows:

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
human LDLo oral 430mg/kg (430mg/kg)   Gekkan Yakuji. Pharmaceuticals Monthly. Vol. 22, Pg. 651, 1980.
man LDLo unreported 110mg/kg (110mg/kg)   "Poisoning; Toxicology, Symptoms, Treatments," 2nd ed., Arena, J.M., Springfield, IL, C.C. Thomas, 1970Vol. 2, Pg. 73, 1970.
rat LC50 inhalation 67ppm(NO2)/4H (67ppm)   AMA Archives of Industrial Hygiene and Occupational Medicine. Vol. 10, Pg. 418, 1954.