Propyne Suppliers list
Company Name: Dalian Richfortune Chemicals Co., Ltd
Tel: 86-411-84820922, 84821539
Products Intro:
Company Name: Mainchem Co., Ltd.
Tel: +86-0592-6210733
Products Intro: Product Name:Propyne
Company Name: Shanghai wechem chemical co., ltd  Gold
Tel: 021-5198 7501
Products Intro: Product Name:Methyl Acetylene
Purity:99.9+ Package:5KG/3000.00;
Company Name: J & K SCIENTIFIC LTD.  
Tel: 400-666-7788 +86-10-82848833
Products Intro: Product Name:Propyne (ca. 3% in Heptane)
Company Name: Meryer (Shanghai) Chemical Technology Co., Ltd.  
Tel: +86-(0)21-61259100(Shanghai) +86-(0)755-86170099(ShenZhen) +86-(0)10-62670440(Beijing)
Products Intro: Product Name:Propyne (ca. 3% in Heptane)
Purity:stabiliZed with 28% Acetone Package:200g Remarks:P1881
Propyne Basic information
Product Name:Propyne
Synonyms:2-Propyne;prop-1-yne;Propyne (ca. 3% in Heptane);Propyne (ca. 3-4% in Heptane);Propyne (ca. 4% in N,N-Dimethylformamide, ca. 1.0mol/L);Propyne (ca. 5% in Tetrahydrofuran, ca. 1mol/L);Propyne >=97%;(ca. 3% in Heptane)
Product Categories:Allyl Monomers;Monomers;Polymer Science;Chemical Synthesis;Compressed and Liquefied Gases;Synthetic Reagents;Chemical Synthesis;Specialty Gases;Synthetic Reagents
Mol File:74-99-7.mol
Propyne Structure
Propyne Chemical Properties
Melting point −102.7 °C(lit.)
Boiling point −23.2 °C(lit.)
density 0.6070
vapor pressure 204.6 mm Hg ( −49.5 °C)
refractive index 1.3863
Fp -51 °C
form gas
CAS DataBase Reference74-99-7(CAS DataBase Reference)
NIST Chemistry ReferencePropyne(74-99-7)
EPA Substance Registry System1-Propyne(74-99-7)
Safety Information
Hazard Codes F,Xi
Risk Statements 11-37-43
Safety Statements 16-36-38-37
RIDADR UN 1954 2.1
WGK Germany -
RTECS UK4250000
HazardClass 2.1
PackingGroup II
Hazardous Substances Data74-99-7(Hazardous Substances Data)
MSDS Information
SigmaAldrich English
Propyne Usage And Synthesis
Chemical PropertiesColorless, liquefied gas.
Chemical PropertiesMethyl acetylene is a flammable, colorless gas. Sweet odor. A fuel that is shipped as a liquefied compressed gas.
UsesSpecialty fuel, chemical intermediate.
General DescriptionA colorless liquefied gas with a sweet odor. Mp: -104°C, bp: -23.1°C. Insoluble in water, soluble in ethanol, chloroform and benzene. Moderately toxic by inhalation. Used as a speciality fuel. Denser than air. Vapors may ignite at distant sources of ignition and flash back.
Reactivity ProfilePropyne is highly flammable. The liquid material in cylinders contains about 30% propadiene. Detonation may occur at 95° C [MCA Case History No. 632]. Reacts exothermically with many oxidizing agents and with some reducing agents as well. May react with silver, copper, and mercury salts in aqueous solution to give explosive acetylides. Incompatible with brass that contains more than 65% copper, with other copper-containing alloys, with Monel metal, with neoprene, polyethylene, and, to a lesser extent, with Teflon. May enflame in air in the presence of Co, Hg, Hg salts, K, Ag, Ag salts, RbH, CsH, halogens, HNO3, NaH. Can decompose explosively when compressed to 4.5 to 5.6 atmospheres. Moderate explosion hazard when exposed to heat or flame or by spontaneous chemical reaction. Has been known to decompose explosively at high pressures and moderate temperatures in the absence of air.
HazardFlammable, dangerous fire risk. Toxic by inhalation. Central nervous system impairment.
Safety ProfileThs compound is a simple anesthetic and in high concentration is an asphyxiant. Mutation data reported. Dangerous fire hazard when exposed to heat or flame; can react vigorously with oxibzing materials. Explosive in the form of vapor when exposed to heat or flame. Localized heating of liquid-containing cylinders to 95°C may cause an explosion. Product of reaction with silver nitrate ignites at 150°C. A commercial mixture containing 30% propyne in MAPP gas is similar to ethylene in potential hazards and handling requirements. To fight fire, stop flow of gas. When heated to decomposition it emits acrid smoke and irritating fumes. See also ACETYLENE COMPOUNDS.
Potential ExposureThis material may be used as a liquid rocket propellant, in admixture with propadiene as an industrial cutting fuel.
First aidIf this chemical gets into the eyes, remove any contact lenses at once and irrigate immediately for at least 15 minutes, occasionally lifting upper and lower lids. Seek medical attention immediately. If this chemical contacts the skin, remove contaminated clothing and wash immediately with soap and water. Seek medical attention immediately. If this chemical has been inhaled, remove from exposure, begin rescue breathing (using universal precautions, including resuscitation mask) if breathing has stopped and CPR if heart action has stopped. Transfer promptly to a medical facility. When this chemical has been swallowed, get medical attention. Give large quantities of water and induce vomiting. Do not make an unconscious person vomit. Medical observation is recommended for 24 to 48 hours after breathing overexposure, as pulmonary edema may be delayed. As first aid for pulmonary edema, a doctor or authorized paramedic may consider administering a drug or other inhalation therapy. If frostbite has occurred, seek medical attention immediately; do NOT rub the affected areas or flush them with water. In order to prevent further tissue damage, do NOT attempt to remove frozen clothing from frostbitten areas. If frostbite has NOT occurred, immediately and thoroughly wash contaminated skin with soap and water.
ShippingUN3161 Liquefied gas, flammable, n.o.s., Hazard Class: 2.1; Labels: 2.1-Flammable gas, Technical Name Required. Cylinders must be transported in a secure upright position, in a well-ventilated truck. Protect cylinder and labels from physical damage. The owner of the compressed gas cylinder is the only entity allowed by federal law (49CFR) to transport and refill them. It is a violation of transportation regulations to refill compressed gas cylinders without the express written permission of the owner.
Purification MethodsPurify it by preparative gas chromatography. [Beilstein 1 H 246.]
IncompatibilitiesForms explosive gas mixture with air. The liquid material in cylinders contains about 30% propadiene. Detonation may occur at 95C. May form explosive peroxides. Can decompose explosively on heating and @ 4.55.6 atmospheres of pressure. Strong oxidizers may cause fire and explosions. Forms shock sensitive compounds with copper, magnesium, silver and their alloys. Copper or copper alloys containing more than 67% copper should not be used in handling equipment. Attacks some plastics, rubber and coatings.
Waste DisposalReturn refillable compressed gas cylinders to supplier. Dissolve or mix the material with a combustible solvent and burn in a chemical incinerator equipped with an afterburner and scrubber. All federal, state, and local environmental regulations must be observed.
Tag:Propyne(74-99-7) Related Product Information
PROPYLENE Acetylene 3-Butyn-1-ol 1-ETHYNYLCYCLOHEXENE 3-HEXYN-1-OL 3-PENTYN-1-OL 1,4-Dichloro-2-butyne 3-Nonyn-1-ol 1-ETHYNYLCYCLOHEXYLAMINE 1,4-Bis(2-hydroxyethoxy)-2-butyne 2-Butyn-1-ol 5-CYANO-1-PENTYNE 2-Butyne-1,4-diol Propargyl alcohol Ethyl propiolate 2-Propynylamine, 3-Amino-1-propyne,2-Propynylamine, 3-Amino-1-propyne propargyl bromide,3-bromo-1-propyne,propargyl bromide,3-bromo-1-propyne Methyl propiolate