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Allene

Allene Suppliers list
Company Name:J & K SCIENTIFIC LTD.  
Tel:400-666-7788 +86-10-82848833
Email:jkinfo@jkchemical.com;market3@jkchemical.com
Products Intro: Product Name:Allene 96% min
CAS:463-49-0
Purity:97% Package:25g
Company Name:Meryer (Shanghai) Chemical Technology Co., Ltd.  
Tel:+86-(0)21-61259100(Shanghai) +86-(0)755-86170099(ShenZhen) +86-(0)10-59487313(Beijing)
Email:sh@meryer.com
Products Intro: Product Name:Allene
CAS:463-49-0
Purity:98% Remarks:AAM126185
Company Name:Wuhan Chemwish Technology Co., Ltd  
Tel:86-027-67849912
Email:sales@chemwish.com
Products Intro: Product Name:Allene
CAS:463-49-0
Purity:98% Package:1g;5g;25g;50g;100g;500g
Company Name:Shanghai Sinch Parmaceuticals Tech. Co. Ltd.  
Tel:+86-21-54098501
Email:sales@sinch.com.cn
Products Intro: Product Name:Allene
CAS:463-49-0
Purity:96% Package:1g;5g;25g;50g;100g;1kg
Company Name:Clearsynth Labs Limited  
Tel:+91-22-26355700
Email:info@clearsynth.com
Products Intro: Product Name:Allene
CAS:463-49-0
Remarks:CS-M-00001
Allene Basic information
Product Name:Allene
Synonyms:1,2-propadiene;CH2=C=CH2;Propa-1,2-diene;Propadiene, inhibited;propadiene,inhibited;sym-Allylene;ALLENE;Dimethylene methane
CAS:463-49-0
MF:C3H4
MW:40.06
EINECS:207-335-3
Product Categories:
Mol File:463-49-0.mol
Allene Structure
Allene Chemical Properties
mp −136 °C(lit.)
bp -34 °C
density 0,647 g/cm3
vapor density 1.42 (20 °C, vs air)
vapor pressure 6795 mm Hg ( 21 °C)
storage temp. 2-8°C
CAS DataBase Reference463-49-0(CAS DataBase Reference)
Safety Information
Hazard Codes F+,F
Risk Statements 12
Safety Statements 9-16-33
RIDADR UN 2200 2.1
WGK Germany 3
F 17
Hazard Note Flammable
TSCA T
HazardClass 2.1
MSDS Information
ProviderLanguage
SigmaAldrich English
Allene Usage And Synthesis
General DescriptionA colorless flammable gas. May become unstable. Not toxic but asphyxiation may occur because of displacement of oxygen. Under prolonged exposure to fire or heat the containers may rupture violently and rocket.
Air & Water ReactionsHighly flammable.
Reactivity ProfileThe unsaturated aliphatic hydrocarbons, such as PROPADIENE, are generally much more reactive than the alkanes. Strong oxidizers may react vigorously with them. Reducing agents can react exothermically to release gaseous hydrogen. In the presence of various catalysts (such as acids) or initiators, compounds in this class can undergo very exothermic addition polymerization reactions. Many of these compounds undergo autoxidation upon exposure to the air to form explosive peroxides. Violent explosions have occurred at low temperatures in ammonia synthesis gas units. These explosions have been traced to the addition products of dienes and oxides of nitrogen, produced from the interaction of nitrogen oxide and oxygen [Bretherick, 1995].
Health HazardVapors may cause dizziness or asphyxiation without warning. Some may be toxic if inhaled at high concentrations. Contact with gas or liquefied gas may cause burns, severe injury and/or frostbite. Fire may produce irritating and/or toxic gases.
Fire HazardEXTREMELY FLAMMABLE. Will be easily ignited by heat, sparks or flames. Will form explosive mixtures with air. Silane will ignite spontaneously in air. May polymerize explosively when heated or involved in a fire. Vapors from liquefied gas are initially heavier than air and spread along ground. Vapors may travel to source of ignition and flash back. Cylinders exposed to fire may vent and release flammable gas through pressure relief devices. Containers may explode when heated. Ruptured cylinders may rocket.
Allene Preparation Products And Raw materials
Preparation ProductsMalononitrile
Tag:Allene(463-49-0) Related Product Information
(-)-2,3-O-Isopropylidene-D-threitol 1,1',1'',1'''-(Propadiene-1,3-diylidene)tetrakisbenzene Allene, tetramethyl-,allene,tetramethyl RUBIDIUM GRAPHITE fenprostalene ALLENYLTRIBUTYLTIN 1-cyclohexyl-1,2-propadien 3-METHYL-1,2-BUTADIENE 1,2-PENTADIENE Allene FEMA 3678 Allene, methyl- 2,2-DIMETHYL-3,4-OCTADIENAL 2-BUTYL-2-ETHYL-5-METHYL-3,4-HEXADIENAL tetrakis(trimethylsilyl)allene,1,1,3,3-Tetrakis(trimethylsilyl)allene 2-(3-ETHYL-4-OXO-5-(3-ETHOXY-5-(3-ETHYL-5-METHYL-1,3-BENZOTHIAZOLIN-2-YLIDEN)-PENTA-1,3-DIEN-1-YLIDEN)-1,3-THIAZOLIDIN-2-YLIDEN-METHYL)-3-ETHYL-4,5-DIPHENYL-1,3-THIAZOLIUM IODIDE adenallene 1,2-Propadiene, 1-methoxy-,1-methoxy-1,2-propadien