ChemicalBook > CAS DataBase List > 1,2-Dihydro-3H-1,2,4-triazol-3-one

1,2-Dihydro-3H-1,2,4-triazol-3-one

Product Name
1,2-Dihydro-3H-1,2,4-triazol-3-one
CAS No.
930-33-6
Chemical Name
1,2-Dihydro-3H-1,2,4-triazol-3-one
Synonyms
2,4-Dihydro-1,2,4-triazol-3-one;s-Triazol-3-ol;1,2,4-Triazole-3-ol;1,2,4-Triazolin-3-one;1H-1,2,4-Triazol-3-ol;3H-1,2,4-trizole-3-one;Δ2-1,2,4-Triazolin-5-one;1H-1,2,4-Triazol-3(2H)-one;1H-1,2,4-triazol-5(4H)-one;1,2,4-TRIAZOL-3-ONE (SEE 5130)
CBNumber
CB5839276
Molecular Formula
C2H3N3O
Formula Weight
85.06
MOL File
930-33-6.mol
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1,2-Dihydro-3H-1,2,4-triazol-3-one Property

Melting point:
234-235 °C
Boiling point:
270℃[at 101 325 Pa]
Density 
1.81±0.1 g/cm3(Predicted)
vapor pressure 
0.003Pa at 25℃
storage temp. 
Inert atmosphere,Room Temperature
solubility 
DMSO (Sparingly), Methanol (Slightly, Sonicated)
form 
crystals
pka
8.81±0.20(Predicted)
color 
White
Water Solubility 
76g/L at 20℃
LogP
0 at 35℃
NIST Chemistry Reference
3H-1,2,4-Triazol-3-one, 1,2-dihydro-(930-33-6)
EPA Substance Registry System
3H-1,2,4-Triazol-3-one, 1,2-dihydro- (930-33-6)
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Safety

HS Code 
2933998090
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Warning
Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P271Use only outdoors or in a well-ventilated area.

P280Wear protective gloves/protective clothing/eye protection/face protection.

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N-Bromosuccinimide Price

TRC
Product number
H953870
Product name
1H-1,2,4-triazol-5-ol
Packaging
250mg
Price
$45
Updated
2021/12/16
AK Scientific
Product number
J95987
Product name
1,2-Dihydro-3H-1,2,4-triazol-3-one
Packaging
1g
Price
$10
Updated
2021/12/16
AK Scientific
Product number
J95987
Product name
1,2-Dihydro-3H-1,2,4-triazol-3-one
Packaging
25g
Price
$49
Updated
2021/12/16
Biosynth Carbosynth
Product number
FD164829
Product name
1,2-Dihydro-3H-1,2,4-triazol-3-one
Packaging
10g
Price
$50
Updated
2021/12/16
Biosynth Carbosynth
Product number
FD164829
Product name
1,2-Dihydro-3H-1,2,4-triazol-3-one
Packaging
25g
Price
$75
Updated
2021/12/16
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1,2-Dihydro-3H-1,2,4-triazol-3-one Chemical Properties,Usage,Production

Chemical Properties

white solid

Flammability and Explosibility

Not classified

Synthesis

563-41-7

930-33-6

Example 2 Synthesis of 1,2,4-triazolin-5-one: A mixture of aminourea hydrochloride (10.0 g, 89.6 mmol), trimethyl orthoformate (28.5 g, 269 mmol), and methanol (100 mL) was stirred for 2 hours at room temperature. Upon completion of the reaction, the solvent was removed by concentration under reduced pressure. Subsequently, toluene (100 mL) was added to the concentrate and the mixture was cooled to 0°C. The precipitate was collected by filtration to afford 1,2-dihydro-3H-1,2,4-triazol-3-one (7.26 g, 100% yield) as a white solid. The structure of the product was confirmed by 1H NMR (d6-DMSO) and 13C NMR (d6-DMSO): 1H NMR δ= 7.66 (1H, s, CH), 11.24 (1H, s, NH) and 11.35 (1H, s, NH); and 13C NMR δ= 137.0 (CH2C=N) and 156.6 (NHCONH).

References

[1] Patent: US2003/187274, 2003, A1

1,2-Dihydro-3H-1,2,4-triazol-3-one Preparation Products And Raw materials

Raw materials

Preparation Products

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View Lastest Price from 1,2-Dihydro-3H-1,2,4-triazol-3-one manufacturers

Anhui Royal Chemical Co., Ltd.
Product
1,2-DIHYDRO-3H-1,2,4-TRIAZOL-3-ONE 930-33-6
Price
US $2200.00/kg
Min. Order
100kg
Purity
99.58%
Supply Ability
3 tons
Release date
2024-05-23
Career Henan Chemical Co
Product
1,2-Dihydro-3H-1,2,4-triazol-3-one 930-33-6?
Price
US $1.00/kg
Min. Order
1kg
Purity
98%
Supply Ability
100KG
Release date
2018-12-21

930-33-6, 1,2-Dihydro-3H-1,2,4-triazol-3-oneRelated Search:

1,2,4-Triazole Dihydromyrcenol 1,2,3-1H-Triazole Ribavirin 5-Methyl-1H-benzotriazole Tolyltriazole 1H-Benzotriazole 3-Hydroxy-1-phenyl-1,2,4-triazole Aprepitant 5-METHYL-4-PHENYL-2,4-DIHYDRO-3H-1,2,4-TRIAZOL-3-ONE Ripisartan Isopropyl 2,5-dihydro-5-oxo-1-(3- 4-(4-METHOXYPHENYL)-5-METHYL-2,4-DIHYDRO-3H-1,2,4-TRIAZOL-3-ONE Ethyl 2,5-dihydro-5-oxo-1-(3- 2,5-Dihydro-1-(4-nitrophenyl)-5-oxo-1H-1,2,4- 2-(2,4-Dibromophenyl)-1,2-dihydro-5-phenyl-3H-1,2,4-triazol-3-one Methyl 1-(4-bromophenyl)-2,5-dihydro-5-oxo-1H- 4-CYCLOHEXYL-3-MERCAPTO-4,5-DIHYDRO-1H-1,2,4-TRIAZOL-5-ONE

  • 1,2,4-Triazole-3-ol
  • 1,2-dihydro-3h-1,2,4-triazol-3-one
  • 1,2-DIHYDRO-3H-1,2,4-TRIAZOLE-3-ONE
  • 1,2-Dihydro-3H-1,2,4-triazole-
  • 1,2,4-TRIAZOL-3-ONE (SEE 5130)
  • 2,4-Dihydro-1,2,4-triazol-3-one
  • s-Triazol-3-ol
  • Δ2-1,2,4-Triazolin-5-one
  • 1,2-dihydro-1,2,4-triazol-3-one
  • 1,2,4-Triazolin-3-one
  • 1H-1,2,4-Triazol-3(2H)-one
  • 3H-1,2,4-Triazol-3-one,1,2-dihydro-
  • 1,2,4-Triazolin-3-one@100 μg/mL in Methanol
  • CAS No.930-33-6 1,2-Dihydro-3H-1,2,4-triazol-3-one
  • 1H-1,2,4-triazol-5(4H)-one
  • 1H-1,2,4-Triazol-3-ol
  • 3H-1,2,4-trizole-3-one
  • 930-33-6
  • C2H3N3O