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288-88-0

Basic Information
CAS No.: 288-88-0
Name: 1,2,4-Triazole
Molecular Structure:
Molecular Structure of 288-88-0 (1,2,4-Triazole)
Formula: C2H3N3
Molecular Weight: 69.06
Synonyms: s-Triazole(8CI);3,4-Diazapyrrole;NSC 83128;1,2,4-1H-Triazole;
EINECS: 206-022-9
Density: 1.274 g/cm3
Melting Point: 115-117 °C
Boiling Point: 260 °C at 760 mmHg
Flash Point: 139.1 °C
Solubility: Water solubility: 1250 g/L at 20 °C
Appearance: white crystalline powder and flakes
Hazard Symbols: HarmfulXn,IrritantXi,CorrosiveC
Risk Codes: 22-36-63-34
Safety: 36/37-45-36/37/39-27-26
Transport Information:
PSA: 41.57000
LogP: -0.19530
Synthetic route
107-31-3

Methyl formate

288-88-0

1,2,4-Triazole

Conditions
ConditionsYield
With ammonium chloride; hydrazine hydrate at 120℃; Reagent/catalyst; Temperature; Sealed tube; Large scale;94%
5818-15-5

d'hydrazide de l'acide propionique

N,N-Dimethyl-N'-(dimethylamino-methoxymethyl)-formamidin

A

288-88-0

1,2,4-Triazole

B

758-96-3

N,N-dimethyl-propanamide

Conditions
ConditionsYield
In methanol for 7h; Heating;A 87%
B 91%

ammonium bicarbonate

628-36-4

diformylhydrazine

288-88-0

1,2,4-Triazole

Conditions
ConditionsYield
With formamide In water89.9%
1068-57-1

acetic acid hydrazide

N,N-Dimethyl-N'-(dimethylamino-methoxymethyl)-formamidin

A

288-88-0

1,2,4-Triazole

B

127-19-5

N,N-dimethyl acetamide

Conditions
ConditionsYield
In methanol for 8h; Heating;A 71%
B 52%
21034-55-9

1-chloro-1,2,4-triazole

74-88-4

methyl iodide

A

288-88-0

1,2,4-Triazole

B

6086-21-1

1-methyl-1H-1,2,4-triazole

C

1,4-dimethyl-1,2,4-triazolium triiodide

D

C4H7IN3(1+)*ClI2(1-)

Conditions
ConditionsYield
In dichloromethane at 42℃; for 3h; Further byproducts given;A 19%
B 6%
C 56%
D 17%
In dichloromethane at 20℃; for 48h; Further byproducts given;A 30%
B 14%
C 27%
D 34%
21034-55-9

1-chloro-1,2,4-triazole

74-88-4

methyl iodide

A

288-88-0

1,2,4-Triazole

B

6086-21-1

1-methyl-1H-1,2,4-triazole

C

21034-58-2

1-iodo-1,2,4-triazole

Conditions
ConditionsYield
In chloroform at 20℃; for 48h;A 32%
B 16%
C 52%
21034-55-9

1-chloro-1,2,4-triazole

A

288-88-0

1,2,4-Triazole

B

6086-21-1

1-methyl-1H-1,2,4-triazole

C

21034-58-2

1-iodo-1,2,4-triazole

Conditions
ConditionsYield
With methyl iodide In chloroform at 20℃; for 48h;A 32%
B 16%
C 52%
21034-55-9

1-chloro-1,2,4-triazole

74-88-4

methyl iodide

A

288-88-0

1,2,4-Triazole

B

6086-21-1

1-methyl-1H-1,2,4-triazole

C

21034-58-2

1-iodo-1,2,4-triazole

D

5-Iodo-1,4-dimethyl-1H-[1,2,4]triazol-4-ium; chloride

Conditions
ConditionsYield
In dichloromethane at 20℃; for 48h;A 43%
B 7%
C 27%
D 23%
21034-55-9

1-chloro-1,2,4-triazole

A

288-88-0

1,2,4-Triazole

B

6086-21-1

1-methyl-1H-1,2,4-triazole

C

21034-58-2

1-iodo-1,2,4-triazole

D

5-Iodo-1,4-dimethyl-1H-[1,2,4]triazol-4-ium; chloride

Conditions
ConditionsYield
With methyl iodide In dichloromethane at 20℃; for 48h;A 43%
B 7%
C 27%
D 23%
21034-55-9

1-chloro-1,2,4-triazole

74-88-4

methyl iodide

A

288-88-0

1,2,4-Triazole

B

4114-36-7

2,4-dimethyl-2,4-dihydro-[1,2,4]triazol-3-one

C

1,4-dimethyl-1,2,4-triazolium triiodide

D

C4H7IN3(1+)*ClI2(1-)

Conditions
ConditionsYield
In dichloromethane at 42℃; for 3h; Product distribution; other solvent, other temperature, other time;A 34%
B 2%
C 40%
D 24%
21034-55-9

1-chloro-1,2,4-triazole

74-88-4

methyl iodide

A

288-88-0

1,2,4-Triazole

B

6086-21-1

1-methyl-1H-1,2,4-triazole

C

10570-40-8

4-methyl-4H-[1,2,4]triazole

D

1,4-dimethyl-1,2,4-triazolium triiodide

Conditions
ConditionsYield
In dichloromethane at 20℃; for 48h; Further byproducts given;A 30%
B 14%
C 5%
D 27%
15625-88-4

1-acetyl-1H-[1,2,4]triazole

A

288-88-0

1,2,4-Triazole

B

66333-88-8

5-methylisoxazole

Conditions
ConditionsYield
at 800℃; under 0.01 Torr; flash vacuum pyrolysis;A 26%
B 25%

triadimefon

A

288-88-0

1,2,4-Triazole

B

24473-06-1

1-(4'-chlorophenoxy)-3,3-dimethyl-butan-2-one

C

106-48-9

4-chloro-phenol

D

1H-(1,2,4-triazol-1-yl)-3,3-dimethylbutan-2-one

E

1-(4-chlorophenoxy)methyl-1,2,4-triazole

F

1-(4-chlorophenoxy)-3,3-dimethyl-1-(1,2,4-triazol-1-yl)butan-2-ol

Conditions
ConditionsYield
In methanol for 24h; Product distribution; Irradiation; also in hexane and acetone;A 5.5%
B 9.5%
C 15%
D 10.5%
E 15%
F 11%
6085-94-5

1-benzyl-1,2,4-triazole

538-51-2

benzylidene phenylamine

A

288-88-0

1,2,4-Triazole

B

62-53-3

aniline

C

501-65-5

diphenyl acetylene

Conditions
ConditionsYield
With potassium tert-butylate In N,N-dimethyl-formamide at 75℃; for 0.5h;A n/a
B n/a
C 11%
290-87-9

1,3,5-Triazine

288-88-0

1,2,4-Triazole

Conditions
ConditionsYield
With hydrazine hydrochloride; ethanol
61-82-5

3(5)-amino-1,2,4-triazole

288-88-0

1,2,4-Triazole

Conditions
ConditionsYield
With hypophosphorous acid beim Diazotieren;
3232-84-6

urazole

288-88-0

1,2,4-Triazole

Conditions
ConditionsYield
With diphosphorus pentasulfide at 200℃;
4928-87-4

1,2,4-triazole-3-carboxylic acid

288-88-0

1,2,4-Triazole

628-36-4

diformylhydrazine

288-88-0

1,2,4-Triazole

Conditions
ConditionsYield
With ammonia at 200℃;
624-84-0

formic acid hydrazide

288-88-0

1,2,4-Triazole

Conditions
ConditionsYield
at 260℃;
Conditions
ConditionsYield
With sulfuric acid; hydrazine at 140 - 150℃;
3179-31-5

2,4-dihydro-[1,2,4]triazole-3-thione

288-88-0

1,2,4-Triazole

Conditions
ConditionsYield
With nitric acid; sodium nitrite
41864-22-6

1,1'-Carbonyl-di-(1,2,4-triazole)

115-20-8

1,1,1-trichloroethanol

A

288-88-0

1,2,4-Triazole

B

90160-96-6

[1,2,4]Triazole-1-carboxylic acid 2,2,2-trichloro-ethyl ester

41864-22-6

1,1'-Carbonyl-di-(1,2,4-triazole)

64-17-5

ethanol

A

288-88-0

1,2,4-Triazole

B

40322-21-2

ethyl 1H-1,2,4-triazole-1-carboxylate

41864-22-6

1,1'-Carbonyl-di-(1,2,4-triazole)

920-66-1

1,1,1,3',3',3'-hexafluoro-propanol

A

288-88-0

1,2,4-Triazole

B

90160-97-7

[1,2,4]Triazole-1-carboxylic acid 2,2,2-trifluoro-1-trifluoromethyl-ethyl ester

15625-88-4

1-acetyl-1H-[1,2,4]triazole

288-88-0

1,2,4-Triazole

Conditions
ConditionsYield
water at 25℃; Rate constant; Thermodynamic data; Mechanism; pH= 4.2; further reagent: D2O (pD= 4.2), isotope effect discussed; furth. cat.: NaOH or H2O in MeCN;
15625-88-4

1-acetyl-1H-[1,2,4]triazole

A

288-88-0

1,2,4-Triazole

B

463-51-4

Ketene

15625-88-4

1-acetyl-1H-[1,2,4]triazole

A

288-88-0

1,2,4-Triazole

B

64-19-7

acetic acid

Conditions
ConditionsYield
With water at 25℃; Rate constant; Thermodynamic data; ΔH (excit.), ΔS (excit.); also in the presence of var. carbohydrates;
With water In acetonitrile at 25℃; Rate constant;
With hydrogenchloride In water; tert-butyl alcohol at 25℃; Kinetics; Rate constant; Thermodynamic data; effect of hydrophobicity of the substrate; ΔH++, ΔS++;
With hydrogenchloride In 1,4-dioxane; water at 25℃; Kinetics; Rate constant; Thermodynamic data; effect of hydrophobicity of the substrate; ΔH++, ΔS++;
With hydrogenchloride at 25℃; Rate constant; other 1-acyl-1,2,4-triazoles; also in the presence of atactic poly(methacrylic acid);
288-88-0

1,2,4-Triazole

41253-21-8

sodium triazole

Conditions
ConditionsYield
With sodium methylate In methanol at 20℃;100%
With sodium methylate In methanol for 4h; Heating / reflux;98%
With sodium hydroxide In water at 20℃; for 4h; Substitution;67%
288-88-0

1,2,4-Triazole

20245-84-5

1-vinylthymine

391198-84-8

1-vinyl-4-[1,2,4-(1H)-triazol-1-yl]-5-methyl-pyrimidin-2-(1H)-one

Conditions
ConditionsYield
With triethylamine; trichlorophosphate In 1,4-dioxane at 0 - 20℃; for 0.666667h;100%
288-88-0

1,2,4-Triazole

5-Methyl-1-[(S)-(S)-2-(tetrahydro-pyran-2-yl)-isoxazolidin-5-yl]-1H-pyrimidine-2,4-dione

(2''RS,5'RS)-1-[2'-(tetrahydropyran-2''-yl)-1',2'-isoxazolidin-5'-yl]-4-[1,2,4-(1H)-triazol-1-yl]-5-methylpyrimidin-2-(1H)-one

Conditions
ConditionsYield
With triethylamine; trichlorophosphate In acetonitrile at 20℃; for 0.75h;100%
288-88-0

1,2,4-Triazole

511545-99-6

5'-O-(4,4'-dimethoxytrityl)-3'-O-[(2-cyanoethoxy)(N,N-diisopropylamino)phosphino]-3'-deuterouridine

5'-O-(4,4'-dimethoxytrityl)-3'-O-[(2-cyanoethoxy)(N,N-diisopropylamino)phosphino]-3'-deutero-4-(1,2,4-triazolo)uridine

Conditions
ConditionsYield
With triethylamine; trichlorophosphate In acetonitrile at 0 - 20℃;100%
288-88-0

1,2,4-Triazole

511545-98-5

5'-O-(4,4'-dimethoxytrityl)-3'-O-[(2-cyanoethoxy)(N,N-diisopropylamino)phosphino]-3'-deuterothymidine

5'-O-(4,4'-dimethoxytrityl)-3'-O-[(2-cyanoethoxy)(N,N-diisopropylamino)phosphino]-3'-deutero-4-(1,2,4-triazolo)thymidine

Conditions
ConditionsYield
With triethylamine; trichlorophosphate In acetonitrile at 0 - 20℃;100%
288-88-0

1,2,4-Triazole

669004-75-5

(4-bromomethyl-benzyl)-(2-chloro-pyrimidin-4-yl)-(2,2-dimethyl-propyl)-amine

669004-76-6

(2-chloro-pyrimidin-4-yl)-(2,2-dimethyl-propyl)-(4-[1,2,4]triazol-1-ylmethyl-benzyl)-amine

Conditions
ConditionsYield
With sodium hydride In N,N-dimethyl-formamide at 0 - 20℃; for 16h;100%
In N,N-dimethyl-formamide at 20℃; for 18h;85%
288-88-0

1,2,4-Triazole

942223-81-6

5'-O-levulinyl-3'-O-tert-butyldimethylsilylthymidine

942223-82-7

4-(1,2,4-triazol-1-yl)-5'-O-levulinyl-3'-O-tert-butyldimethylsilylthymidine

Conditions
ConditionsYield
Stage #1: 1,2,4-Triazole With triethylamine; trichlorophosphate In acetonitrile at 0℃; for 0.75h;
Stage #2: 5'-O-levulinyl-3'-O-tert-butyldimethylsilylthymidine In acetonitrile at 20℃; for 1h; Further stages.;
100%
288-88-0

1,2,4-Triazole

120511-84-4

2-[3-bromomethyl-5-(cyanodimethylmethyl)phenyl]-2-methylpropanenitrile

120511-73-1

anastrozol

Conditions
ConditionsYield
With potassium tert-butylate In toluene at 9 - 21℃; for 4.5h;100%
With tetrabutylammomium bromide; potassium hydroxide In water; toluene at 75 - 80℃; for 2h; Solvent; Temperature; Reagent/catalyst;82%
With tetrabutylammomium bromide; potassium carbonate; potassium hydroxide In toluene at 85 - 90℃; for 5h;47%
288-88-0

1,2,4-Triazole

952433-32-8

2-[4-(chloromethyl)-2-methoxyphenoxy]-6-fluoro pyridine

2-fluoro-6-[2-methoxy-4-(1H-1,2,4-triazol-1-ylmethyl)phenoxy]pyridine

Conditions
ConditionsYield
With sodium hydride In N,N-dimethyl-formamide at 40℃;100%
With sodium hydride In N,N-dimethyl-formamide at 40℃; Inert atmosphere;
288-88-0

1,2,4-Triazole

930-68-7

cyclohexenone

1043963-31-0

3-(1H-1,2,4-triazol-1-yl)cyclohexan-1-one

Conditions
ConditionsYield
In water at 60℃; under 4500450 Torr; for 20h; Aza-Michael reaction;100%
In water at 60℃; under 4500450 Torr; for 20h; Solvent; Pressure; Reagent/catalyst; Concentration; Time;100%
With toluene-4-sulfonic acid In neat (no solvent) at 60℃; for 0.5h; Michael Addition; Irradiation; Green chemistry;99%
With poly(N-vinylimidazole) In water at 20 - 25℃; for 24h; aza-Michael reaction; Inert atmosphere;92%
With 2,4,6-tripropyl-1,3,5,2,4,6-trioxatriphosphinane-2,4,6-trioxide In acetonitrile at 23℃; for 6h; Michael Addition;91%
288-88-0

1,2,4-Triazole

78-95-5

chloroacetone

64882-52-6

1-(1H-1,2,4-triazol-1-yl)propan-2-one

Conditions
ConditionsYield
With potassium carbonate In acetone at 60℃; for 20h;100%
With sodium hydrogencarbonate In toluene at 110 - 120℃; for 3h; Inert atmosphere;22.2%
288-88-0

1,2,4-Triazole

1188522-91-9

5-bromo-3',5'-diacetyl-2'-fluoro-2'-deoxyuridine

1188522-93-1

C15H15BrFN5O6

Conditions
ConditionsYield
Stage #1: 1,2,4-Triazole With trichlorophosphate In acetonitrile at 0℃; for 0.333333h;
Stage #2: 5-bromo-3',5'-diacetyl-2'-fluoro-2'-deoxyuridine In acetonitrile at 0 - 20℃;
Stage #3: With triethylamine In water; acetonitrile for 0.5h;
100%
288-88-0

1,2,4-Triazole

74-88-4

methyl iodide

120317-69-3

1,4-dimethyl-1,2,4-triazolium iodide

Conditions
ConditionsYield
With potassium carbonate In methanol; acetonitrile at 40℃; for 72h;100%
288-88-0

1,2,4-Triazole

55036-34-5

ethyl 2-(5-methyl-2,4-dioxo-3,4-dihydropyrimidin-1(2H)-yl)acetate

1360461-24-0

1-(ethoxycarbonylmethyl)-4-(1,2,4-triazolyl)thymine

Conditions
ConditionsYield
With triethylamine; trichlorophosphate In acetonitrile at 20℃; for 3h;100%
With triethylamine; trichlorophosphate In dichloromethane; acetonitrile at 0 - 23℃; for 21h; Inert atmosphere;89%
288-88-0

1,2,4-Triazole

272788-85-9

N1-tert-butyloxycarbonylmethylthymine

1360461-25-1

1-(tert-butoxycarbonylmethyl)-4-(1,2,4-triazolyl)thymine

Conditions
ConditionsYield
With triethylamine; trichlorophosphate In acetonitrile at 20℃; for 3h;100%
288-88-0

1,2,4-Triazole

5-(2-fluorophenyl)-7-methylimidazo[5,1-f][1,2,4]triazin-4(3H)-one

5-(2-fluorophenyl)-7-methyl-4-(1H-1,2,4-triazol-1-yl)imidazo[5,1-f][1,2,4]triazine

Conditions
ConditionsYield
Stage #1: 1,2,4-Triazole With triethylamine; trichlorophosphate In acetonitrile at 0 - 20℃; for 0.416667h;
Stage #2: 5-(2-fluorophenyl)-7-methylimidazo[5,1-f][1,2,4]triazin-4(3H)-one In acetonitrile at 20℃; for 2h;
100%
110-89-4

piperidine

288-88-0

1,2,4-Triazole

75-44-5

phosgene

piperidin-1-yl(1H-1,2,4-triazol-1-yl)methanone

Conditions
ConditionsYield
Stage #1: 1,2,4-Triazole; phosgene With dmap In dichloromethane; toluene at 25℃; for 1h; Inert atmosphere;
Stage #2: piperidine In dichloromethane; toluene at 25℃; for 12h; Inert atmosphere;
100%
288-88-0

1,2,4-Triazole

C8H8ClN3S

C10H10N6S

Conditions
ConditionsYield
With pyridine at 90℃;100%
288-88-0

1,2,4-Triazole

81765-99-3

2-amino-4-chloro-5,6,7,8-tetrahydro<1>benzothieno<2,3-d>pyrimidine

C12H12N6S

Conditions
ConditionsYield
With pyridine at 90℃;100%
288-88-0

1,2,4-Triazole

2765-59-5

2-chloro-10-(3-chloropropyl)-10H-phenothiazine

C17H15ClN4S

Conditions
ConditionsYield
With potassium carbonate; potassium iodide In acetone at 80℃; for 72h;100%
288-88-0

1,2,4-Triazole

1-(3-O-acetyl-2,5,6-trideoxy-β-D-erythro-hex-5-ynofuranosyl)-5-methyluraciI

1-(3-O-acetyl-2,5,6-trideoxy-β-D-erythro-hex-5-ynofuranosyl)-5-methyl-4-(N-1-triazolyl)uracil

Conditions
ConditionsYield
Stage #1: 1,2,4-Triazole With triethylamine In dichloromethane; acetonitrile at 0℃; for 0.0833333h; Inert atmosphere;
Stage #2: With trichlorophosphate In dichloromethane; acetonitrile at 0℃; for 0.5h; Inert atmosphere;
Stage #3: 1-(3-O-acetyl-2,5,6-trideoxy-β-D-erythro-hex-5-ynofuranosyl)-5-methyluraciI In dichloromethane; acetonitrile at 20℃; for 1h;
100%
Stage #1: 1,2,4-Triazole With triethylamine; trichlorophosphate In dichloromethane; acetonitrile at 0℃; for 0.5h;
Stage #2: 1-(3-O-acetyl-2,5,6-trideoxy-β-D-erythro-hex-5-ynofuranosyl)-5-methyluraciI In dichloromethane; acetonitrile at 20℃; for 1h;
288-88-0

1,2,4-Triazole

50-00-0

formaldehyd

74205-82-6

1-(hydroxymethyl)-1,2,4-triazole

Conditions
ConditionsYield
With triethylamine for 2.5h; Heating;99%
With triethylamine for 2h; Heating;98.5%
In tetrahydrofuran; water at 20℃;96%
288-88-0

1,2,4-Triazole

102789-14-0

1-((6aR,8R,9aS)-2,2,4,4-tetraisopropyl-9-methylenetetrahydro-6H-furo[3,2-f][1,3,5,2,4]trioxadisilocin-8-yl)-pyrimidine-2,4(1H,3H)-dione

134660-28-9

1-<3,5-O-(1,1,3,3-tetraisopropyldisiloxane-1,3-diyl)-2-deoxy-2-methylidene-β-D-ribofuranosyl>-4-(1,2,4-triazol-1-yl)-1H-pyrimidin-2-one

Conditions
ConditionsYield
With triethylamine; trichlorophosphate In acetonitrile for 2h; Ambient temperature;99%
With pyridine; 4-chlorophenylphosphorodichloridate for 48h; Ambient temperature;77%
288-88-0

1,2,4-Triazole

134660-24-5

1-((2R,5R)-4-((tert-butyldimethylsilyl)oxy)-5-((tert-butyldimethylsilyl)oxy)tetrahydrofuran-2-yl)pyrimidine-2,4 (1H,3H)-dione

134660-27-8

1-[(2R,4S,5R)-4-(tert-Butyl-dimethyl-silanyloxy)-5-(tert-butyl-dimethyl-silanyloxymethyl)-3-methylene-tetrahydro-furan-2-yl]-4-[1,2,4]triazol-1-yl-1H-pyrimidin-2-one

Conditions
ConditionsYield
With triethylamine; trichlorophosphate In acetonitrile for 2h; Ambient temperature;99%
288-88-0

1,2,4-Triazole

134660-22-3

1-<2,5-bis-O-(tert-butyldimethylsilyl)-3-deoxy-3-methylene-β-D-erythro-pentofuranosyl>uracil

134660-25-6

1-<2,5-bis-O-(tert-butyldimethylsilyl)-3-deoxy-3-methylene-β-D-erythro-pentofuranosyl>-4-(1,2,4-triazol-1-yl)pyrimidin-2(1H)-one

Conditions
ConditionsYield
With triethylamine; trichlorophosphate In acetonitrile for 2h; Ambient temperature;99%
288-88-0

1,2,4-Triazole

98183-26-7

Ethylchlor<4-(3-chlorphenyl)-piperazin-1-ylamido>phosphat

Ethyl<4-(3-chlorphenyl)-piperazin-1-ylamido>(1,2,4-triazol-1-ylamido)phosphat

Conditions
ConditionsYield
With triethylamine In acetonitrile at 40℃;99%
288-88-0

1,2,4-Triazole

98156-28-6

Ethylchlor<4-(2-chlorphenyl)-piperazin-1-ylamido>phosphat

Ethyl<4-(2-chlorphenyl)-piperazin-1-ylamido>(1,2,4-triazol-1-ylamido)phosphat

Conditions
ConditionsYield
With triethylamine In acetonitrile at 40℃;99%
288-88-0

1,2,4-Triazole

98156-25-3

Ethylchlor<<2-(2,6-dichlorphenoxy)-ethyl>-propylamido>phosphat

Ethyl<<2-(2,6-dichlorphenoxy)-ethyl>-propylamido>(1,2,4-triazol-1-ylamido)phosphat

Conditions
ConditionsYield
With triethylamine In acetonitrile at 40℃;99%
288-88-0

1,2,4-Triazole

160452-65-3

1-[3,5-di-O-acetyl-2-deoxy-4-thio-β-D-ribofuranosyl]uracil

160452-66-4

4-(1,2,4-triazol-1-yl)-1-(3,5-di-O-acetyl-2-deoxy-4-thio-β-D-erythro-pentofuranosyl)pyrimidin-2(1H)-one

Conditions
ConditionsYield
With triethylamine; trichlorophosphate In acetonitrile99%
288-88-0

1,2,4-Triazole

201338-62-7

N,N-tert-butoxycarbonyldehydroalanine

229622-71-3

Boc-Ala[N-Boc-β-(1,2,4-triazol-1-yl)]-OMe

Conditions
ConditionsYield
With potassium carbonate In acetonitrile Ambient temperature;99%
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Chemistry

Molecular Formula: C2H3N3
Molecular Weight: 69.07 
EINECS: 206-022-9 
Index of Refraction: 1.534
Molar Refractivity: 16.86 cm3
Molar Volume: 54.2 cm3
Surface Tension: 67.1 dyne/cm
Density: 1.274 g/cm3
Flash Point: 139.1 °C
Enthalpy of Vaporization: 47.76 kJ/mol
Boiling Point: 260 °C at 760 mmHg
Vapour Pressure: 0.0203 mmHg at 25 °C
Melting point: 119-121 °C(lit.)
Storage tempreture: Store at 0-5 °C
Water solubility: 1250 g/L at 20 °C
Appearance: White crystalline powder and flakes
Structure of 1,2,4-Triazole (CAS NO.288-88-0):
          
IUPAC Name: 1,2,4-Triazole
Canonical SMILES: C1=NC=NN1
InChI: InChI=1S/C2H3N3/c1-3-2-5-4-1/h1-2H,(H,3,4,5)
InChIKey: NSPMIYGKQJPBQR-UHFFFAOYSA-N
Product Category of 1,2,4-Triazole (CAS NO.288-88-0): Pyrazoles & Triazoles;Cefoperazone;Biochemistry;Condensation & Active Esterification;Nucleosides, Nucleotides & Related Reagents;Protecting Agents, Phosphorylating Agents & Condensing Agents;Synthetic Organic Chemistry;Heterocyclic Building Blocks

Uses

 1,2,4-Triazole (CAS NO.288-88-0) is used to produce antifungals.

Toxicity Data With Reference

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
mouse LD50 oral 1350mg/kg (1350mg/kg) BEHAVIORAL: TREMOR

BEHAVIORAL: EXCITEMENT

LUNGS, THORAX, OR RESPIRATION: RESPIRATORY DEPRESSION
Gigiena i Sanitariya. For English translation, see HYSAAV. Vol. 51(11), Pg. 65, 1986.
quail LD50 oral > 316mg/kg (316mg/kg)   Ecotoxicology and Environmental Safety. Vol. 6, Pg. 149, 1982.
rat LD50 oral 1750mg/kg (1750mg/kg) BEHAVIORAL: TREMOR

BEHAVIORAL: EXCITEMENT

LUNGS, THORAX, OR RESPIRATION: RESPIRATORY DEPRESSION
Gigiena i Sanitariya. For English translation, see HYSAAV. Vol. 51(11), Pg. 65, 1986.

Safety Profile

Hazard Codes: HarmfulXn,IrritantXi
Risk Statements: 22-36-63 
R22:Harmful if swallowed. 
R36:Irritating to eyes. 
R63:Possible risk of harm to the unborn child.
Safety Statements: 36/37
S36/37:Wear suitable protective clothing and gloves.
WGK Germany: 2
Hazard Note: Irritant
HS Code: 29339990

Specification

 1,2,4-Triazole , its cas register number is 288-88-0. It also can be called 1,2,4-Triazole ; 1,2,4-1H-Triazole ; and 4H-1,2,4-Triazole (VAN) . It is hazardous, so the first aid measures and others should be known. Such as: When on the skin: first, should flush skin with plenty of water immediately for at least 15 minutes while removing contaminated clothing. Secondly, get medical aid. Or in the eyes: Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Then get medical aid soon. While, it's inhaled: Remove from exposure and move to fresh air immediately. Then you have the ingesting of the product: Wash mouth out with water, and get medical aid immediately.
In addition, 1,2,4-Triazole (CAS NO.288-88-0) could be stable under normal temperatures and pressures. It is not compatible with strong oxidizing agents, strong acids, and you must not take it with incompatible materials. And also prevent it to broken down into hazardous decomposition products: Hydrogen cyanide, nitrogen oxides, carbon monoxide, carbon dioxide, ammonia.