Acetyl ketene CAS:674-82-8
TDS 2 Inquiries
674-82-8
Industrial Grade
99.9%
Qingdao
Orient
25L, 200L, 1000L, customized
2028-12-30
pharmaceutical intermediates,peptides,electronic chemicals
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Product Description
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Seller Information
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Inquiry History
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DescriptionECHEMI Editorial ReferenceCOLOURLESS LIQUID WITH PUNGENT ODOUR.
Diketene, stabilized appears as a colorless liquid with a disagreeable odor. Slightly less dense than water. Irritates skin and eyes. Used to make paints and pharmaceuticals.|Liquid|COLOURLESS LIQUID WITH PUNGENT ODOUR.
Diketene, stabilized appears as a colorless liquid with a disagreeable odor. Slightly less dense than water. Irritates skin and eyes. Used to make paints and pharmaceuticals.CertificatesBasic Info-
Product Name:
Diketene
Other Name:2-Oxetanone,4-methylene-;3-Butenoic acid,3-hydroxy-,β-lactone;Diketene;Ethenone,dimer;4-Methylene-2-oxetanone;Ketene dimer;NSC 93783;2130-41-8;6144-29-2
CAS No.:674-82-8
Molecular Formula:C4H4O2
InChIKeys:InChIKey=WASQWSOJHCZDFK-UHFFFAOYSA-N
Molecular Weight:84.07340
Exact Mass:84.07
EC Number:211-617-1
UNII:0DZ97C3Z7D
ICSC Number:1280
NSC Number:93783
UN Number:2521
DSSTox ID:DTXSID9027289
Color/Form:Colorless liquid; turns brownish-yellow upon standing at room temperature|Colorless liquid when pure|Light colored liquid
Categories:
Characteristics-
PSA:
26.30000
XLogP3:0.44700
Appearance:COLOURLESS LIQUID
Density:1.0897 g/cm3
Melting Point:-6.5 °C
Boiling Point:127.4 °C
Flash Point:34
Refractive Index:1.439
Water Solubility:Solubility in water: reaction
Storage Conditions:2-8ºC
Vapor Pressure:7.9 mm Hg ( 20 °C)
Vapor Density:2.9 (vs air)
Explosive limit:Explosive limits , vol% in air: 2-11.7
Odor:Pungent odor
Henrys Law Constant:Henry's Law constant = 6.07X10-4 atm-cu m/mol at 25 °C (est)
Experimental Properties:BP: 126-127 °C with slight decomposition; 69-71 °C at 100 mm Hg. MP: -7.5 °C|Readily polymerizes on standing|Specific gravity: 1.0939 at 18 °C/4 °C; 1.0905 at 23 °C/4 °C|Specific gravity: 1.09471 at 20 °C/4 °C; 1.088754 at 25 °C/4 °C|Decomposes in water, can react with oxidizing materials|There is no known inhibitor /of polymerization/. Polymerization of uncontaminated diketene is negligible if kept at or near 0 °C.|For more Other Experimental Properties (Complete) data for Acetyl ketene (9 total), please visit the HSDB record page.
Air and Water Reactions:Highly flammable. Slightly soluble in water.
Reactive Group:Esters, Sulfate Esters, Phosphate Esters, Thiophosphate Esters, and Borate Esters
Reactivity Alerts:Highly Flammable
Reactivity Profile:DIKETENE is a very reactive dimer, it may undergo a spontaneous decomposition followed by explosion or ignition [Vervalin, 1973, p.86]. In the presence of bases, amines, mineral acids or Lewis acids a violent polymerization will occur, accompanied by gas evolution [Zdenek, F. et al., Czech Pat. 156 584, 1975].
Autoignition Temperature:590 °F (310 °C)|275 °C
Heat of Vaporization:42.89 kJ/mol at 25 °C
Critical Temperature & Pressure:Critical temperature: 310 °C (583.16 K); critical pressure: 5.47 MPa
Hazard IdentificationClassification of the substance or mixture
Flammable liquids, Category 3
Acute toxicity - Category 4, Inhalation
GHS label elements, including precautionary statements
Pictogram(s) 
Signal word Warning
Hazard statement(s) H226 Flammable liquid and vapour
H332 Harmful if inhaled
Precautionary statement(s) Prevention P210 Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
P233 Keep container tightly closed.
P240 Ground and bond container and receiving equipment.
P241 Use explosion-proof [electrical/ventilating/lighting/...] equipment.
P242 Use non-sparking tools.
P243 Take action to prevent static discharges.
P280 Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/...
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P271 Use only outdoors or in a well-ventilated area.
Response P303+P361+P353 IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse affected areas with water [or shower].
P370+P378 In case of fire: Use ... to extinguish.
P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing.
P317 Get medical help.
Storage P403+P235 Store in a well-ventilated place. Keep cool.
Disposal P501 Dispose of contents/container to an appropriate treatment and disposal facility in accordance with applicable laws and regulations, and product characteristics at time of disposal.
Other hazards which do not result in classification
no data available
Handling and StoragePrecautions for safe handling
NO open flames, NO sparks and NO smoking. Above 33°C use a closed system, ventilation and explosion-proof electrical equipment. Handling in a well ventilated place. Wear suitable protective clothing. Avoid contact with skin and eyes. Avoid formation of dust and aerosols. Use non-sparking tools. Prevent fire caused by electrostatic discharge steam.
Conditions for safe storage, including any incompatibilities
Fireproof. Separated from acids, bases and food and feedstuffs. Cooled. Dry. Store only if stabilized.Store at 32 deg F (0 deg C) in a standard flammable liquids storage warehouse, room, or cabinet. Special vented containers may be required. Separate from oxidizing materials, acids, and alkalies.
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Seller Information
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Business Type:
Trader
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Main Products:
pharmaceutical intermediates,peptides,electronic chemicals
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Location:
Room 102, 1st Floor, East Office Building, No. 45 Pengwan Road, Qianwan Bonded Port Area, Qingdao Zone, China (Shandong) Pilot Free Trade Zone
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Payment Terms:
100% TT in advance
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Average lead Time:
10
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Total Annual Revenue:
$10 million-$25 million
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Total Employees:
51-100
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Year of Establishment:
2024
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Inquiry History2 Inquiries
Country Product Purchase Quantity Date Posted 
Russia
Acetyl ketene
10 KG Nov 25, 2024
Russia
4-Methyl-2H-oxet-2-one
10 KG Nov 26, 2024 Post an enquiry for this product
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