ketene
ketene
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Properties
- Melting point:
- -150°
- Boiling point:
- bp -56°
- Density
- 0.6600
- refractive index
- 1.3040 (estimate)
- form
- Gas
- Exposure limits
- TLV-TWA 0.9 mg/m3 (0.5 ppm); STEL 3.0 mg/m3 (1.5 ppm) (ACGIH); IDLH 50 ppm (NIOSH).
Safety Information
- Symbol(GHS)
GHS02,GHS05,GHS06
- Signal word
- Danger
- Hazard statements
- H315-H220-H330-H335-H318
- Precautionary statements
- P264-P280-P302+P352-P321-P332+P313-P362-P280-P305+P351+P338-P310-P260-P271-P284-P304+P340-P310-P320-P403+P233-P405-P501-P210-P377-P381-P403
- RIDADR
- 1955
- OEB
- C
- OEL
- TWA: 0.5 ppm (0.9 mg/m3), STEL: 1.5 ppm (3 mg/m3)
- HazardClass
- 2.3
- IDLA
- 5 ppm
Use
Ketene is prepared by pyrolysis of acetic anhydride. Purify it by passing through a trap at -75o and collecting in a liquid-nitrogen-cooled trap. Ethylene is removed by evacuating the ethylene in an isopentane-liquid-nitrogen slush pack at -160o. Store it at room temperature in a suitable container in the dark or better at -80o, but do not store it under pressure as it may EXPLODE. It is a strong IRRITANT when inhaled and is as poisonous as phosgene. See diketene in “Heterocyclic Compounds”, Chapter 4. [Hurd Org Synth Coll Vol I 330 1941, Andreades & Carlson Org Synth Coll Vol V 679 1973.]
0 India supplier list of "ketene "
- Product Name:ethenone
- Products Intro:Brand:ahhchemical | Product Number:MR-1018444 | Purity:ethenone
- Company Type: Trader
- Country/Region: CHINA
- Product Name:ketene
- Company Type: Trader
- Country/Region: UNITED STATES