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Melting point: −185.2 °C (−301.4 °F; 88.0 K) ... Propylene, also known as propene, is an unsaturated organic compound with the chemical formula CH 3 CH=CH 2.
Estimates on the prevalence of propylene glycol allergy range from 0.8% (10% propylene glycol in aqueous solution) to 3.5% (30% propylene glycol in aqueous solution). [ 70 ] [ 71 ] [ 72 ] The North American Contact Dermatitis Group (NACDG) data from 1996 to 2006 showed that the most common site for propylene glycol contact dermatitis was the ...
Melting point: −111.9 °C (−169.4 °F; 161.2 K) [2] ... Propylene oxide is an acutely toxic and carcinogenic organic compound with the molecular formula C 3 H 6 O.
The melting point of α-crystalline regions is given as 185 [15] [16] to 220 °C, [15] [17] the density as 0.936 to 0.946 g·cm −3. [18] [19] The β-modification is in comparison somewhat less ordered, as a result of which it forms faster [20] [21] and has a lower melting point of 170 to 200 °C.
Propylene carbonate (often abbreviated PC) is an organic compound with the formula C 4 H 6 O 3. It is a cyclic carbonate ester derived from propylene glycol . [ 4 ] This colorless and odorless liquid is useful as a polar , aprotic solvent . [ 5 ]
The Gmelin rare earths handbook lists 1522 °C and 1550 °C as two melting points given in the literature, the most recent reference [Handbook on the chemistry and physics of rare earths, vol.12 (1989)] is given with 1529 °C.
Polypropylene glycol or polypropylene oxide is the polymer (or macromolecule) of propylene glycol. [1] Chemically it is a polyether, and, more generally speaking, it's a polyalkylene glycol (PAG) H S Code 3907.2000.
General chemical structure of a polyketone. Polyketones are a family of high-performance thermoplastic polymers. The polar ketone groups in the polymer backbone of these materials gives rise to a strong attraction between polymer chains, which increases the material's melting point (255 °C for copolymer (carbon monoxide ethylene), 220 °C for terpolymer (carbon monoxide, ethylene, propylene).