109-98-8

Basic information

• Product Name: 2-PYRAZOLINE
• Synonyms: 2-PYRAZOLINE;pyrazoline;4,5-dihydro-1H-pyrazole;2-PYRAZOLINE 95+%
• CAS NO: 109-98-8
• Molecular Formula: C₃H₆N₂
• Molecular Weight: 70.09
• EINECS: 203-725-2
• Mol File: 109-98-8.mol
• Article Data: 16

Chemical Properties

• Melting Point: 163-165 °C
• Boiling Point: 144°C
• Flash Point: 40.9°C
• Appearance: /
• Density: 1,02 g/cm3
• Vapor Pressure: 6.54mmHg at 25°C
• Refractive Index: 1.4870 to 1.4920
• PKA: 4.60±0.70(Predicted)
• Merck: 14,7961
• CAS DataBase Reference: 2-PYRAZOLINE(CAS DataBase Reference)
• NIST Chemistry Reference: 2-PYRAZOLINE(109-98-8)
• EPA Substance Registry System: 2-PYRAZOLINE(109-98-8)

Safety Data

• Statements: 10
• Safety Statements: 16
• RIDADR: 1993
• RTECS: KO0710000
• HazardClass: 3
• PackingGroup: III
• Hazardous Substances Data: 109-98-8(Hazardous Substances Data)

Usage

Uses

Organic synthesis

InChI:InChI=1/C3H6N2/c1-2-4-5-3-1/h2,5H,1,3H2

Upstream product

• 288-13-1 NH-pyrazole 
• 107-02-8 acrolein 
• 4316-74-9 2-methylamino-1-ethanesulphonic acid sodium salt 
• 625-36-5 2-chloropropionyl chloride 
• 49651-51-6 3-benzenesulfonyl-4,5-dihydro-1H-pyrazole 
• 186581-53-3 diazomethane 
• 74-85-1 ethene 

Downstream Products

• 110182-02-0 4,5-dihydro-pyrazole-1-carbothioic acid anilide 
• 82499-69-2 1-benzenesulfonyl-4,5-dihydro-1H-pyrazole 
• 5920-44-5 1-(2,4-dinitrophenyl)-4,5-dihydro-1H-pyrazole 
• 288-13-1 NH-pyrazole 
• 78158-12-0 1-(3,5-dichlorobenzoyl)-3-(4-methylphenyl)-pyrazoline 
• 35229-00-6 4-methoxy-3,5-diphenypyrazole 
• 1039740-61-8 4-nitrophenyl 4,5-dihydro-1H-pyrazole-1-carboxylate 
• 1337564-61-0 N-[(4,5-dihydro-1H-pyrazol-1-yl)-methylsulfanyl-methylidene]-3-chlorobenzenesulfonamide 
• 900188-90-1 1-(4,5-dihydropyrazol-1-yl)phenylmethanone 
• 802982-86-1 4,5-dihydropyrazole-1-carboxylic acid benzyl ester 

Relevant articles and documents

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Methods and compositions for photo-cross linking photoactive compounds to target tissue

The present invention discloses novel photoactive compounds that may be crosslinked to target substrates. Methods for the preparation and use of the compounds, as well as compositions comprising them, are also disclosed.

Pyrazolines for protecting crop plants against herbicides

Compounds of the formula (I) STR1 where X, n, R1, R2 and R3 are as defined in claim 1 are suitable as antidotes against phytotoxic secondary effects of herbicides in crop plants without adversely affecting the action of the herbicides against harmful plants.