557-98-2 Usage
Chemical Properties
CLEAR COLOURLESS LIQUID
Uses
2-Chloropropene is used in measurement of photoionization cross sections of allyl and 2-propenyl radicals to form C3H5+ by tunable vacuum ultraviolet synchrotron radiation coupled with photofragment translational spectroscopy.
Preparation
1,2-Propadiene adds hydrogen chloride to yield 2-chloropropene. One early synthesis involves dehydrohalogenation of 1,2-dichloropropane with potassium hydroxide.
General Description
2-chloropropene appears as a clear colorless volatile liquid. Less dense than water and insoluble in water. Vapors heavier than air.
Air & Water Reactions
Highly flammable. Insoluble in water.
Reactivity Profile
Halogenated aliphatic compounds, such as 2-Chloropropene, are moderately or very reactive. Reactivity generally decreases with increased degree of substitution of halogen for hydrogen atoms. Low molecular weight haloalkanes are highly flammable and can react with some metals to form dangerous products. Low molecular weight haloalkenes are highly flammable, peroxidizable and may polymerize violently. They may react violently with aluminum. Materials in this group are incompatible with strong oxidizing and reducing agents. Also, they are incompatible with many amines, nitrides, azo/diazo compounds, alkali metals, and epoxides.
Health Hazard
May cause toxic effects if inhaled or absorbed through skin. Inhalation or contact with material may irritate or burn skin and eyes. Fire will produce irritating, corrosive and/or toxic gases. Vapors may cause dizziness or suffocation. Runoff from fire control or dilution water may cause pollution.
Safety Profile
Mildly toxic by
inhalation. Mutation data reported. Very
dangerous fire hazard when exposed to heat,
flame, sparks, or powerful oxidizers. To
fight fire, use water, spray, mist, fog, dry
chemical, alcohol foam. When heated to
decomposition it emits toxic fumes of Cl-.
See also CHLORIDES.
Check Digit Verification of cas no
The CAS Registry Mumber 557-98-2 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 5,5 and 7 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 557-98:
(5*5)+(4*5)+(3*7)+(2*9)+(1*8)=92
92 % 10 = 2
So 557-98-2 is a valid CAS Registry Number.
InChI:InChI=1/C3H5Cl/c1-3(2)4/h1H2,2H3
557-98-2Relevant articles and documents
ADDITION OF 2,2-DICHLOROPROPANE TO 1-HEXENE AND ITS CHEMICAL REACTIONS INITIATED BY SYSTEMS BASED ON Fe(CO)5 AND Mn2(CO)10
Kiseleva, L. N.,Rybakova, N. A.
, p. 2323 - 2327 (1985)
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2, 3, 3, 3-tetrafluoropropene method for the synthesis of
-
Paragraph 0009; 0020; 0021, (2018/01/19)
The invention discloses a method for synthesizing 2,3,3,3-tetrafluoropropene and belongs to the field of organic synthesis. The method comprises the following steps: (1) preparing 2-chloropropene from 1,2-dichloropropane, which serves as a raw material, through continuous catalytic cracking by adopting a fixed bed in the presence of beta-zeolite, which serves as a catalyst; (2) selectively chlorinating 2-chloropropene with chlorine gas under the catalysis of ferric chloride, so as to prepare 2,3,3,3-tetrachloropropylene; and (3) fluorating 2,3,3,3-tetrachloropropylene with hydrofluoric acid under the catalysis of SbF3 or SbF5, thereby obtaining 2,3,3,3-tetrafluoropropene. The synthesis route has the advantages that the source of raw materials is wide, the cost is low, and the product yield is high; and the obtained product can serve as an automotive air conditioning refrigerant and has a positive significance in reduction of greenhouse effect.
Aluminum oxide-induced gas-phase ring-opening in methyl substituted gem-difluorocyclopropanes, leading to 2-fluorobuta-1,3-dienes and vinylacetylenes
Volchkov,Lipkind,Novikov,Nefedov
, p. 658 - 663 (2015/11/27)
A gas-phase pyrolysis of methyl-substituted gem-difluorocyclopropanes in a flow-tube reactor in the presence of Al2O3 at 185 - 250 °C gives 2-fluorobuta-1,3-dienes and vinylacetylenes.
