Paraform

It is marketed as a 35-40 per cent, solution in water (formalin). The rpactions of formaldehyde are partly typical of aldehydes and partly peculiar to itself. By evaporating an aqueous solution paraformaldehyde or paraform (CHjO), an amorphous white solid is produced it is insoluble in most solvents. When formaldehyde is distilled from a 60 per cent, solution containing 2 per cent, of sulphuric acid, it pol5unerises to a crystalline trimeride, trioxane, which can be extracted with methylene chloride this is crystalline (m.p. 62°, b.p. 115°), readily soluble in water, alcohol and ether, and devoid of aldehydic properties ... 

CO 2 —220.52%, cryst from petr ether plus benz or from ale, mp 120—23° (decompn). Sol in ale petr eth plus benz. Prepn from an AcOH soln of 2-methoxy-naphthalene reacted with a HC1 satd suspension of paraformal dehyde in AcOH Ref Beil 6, 3020 ... 

Nach einem anderen Verfahren arbeitet D.R.R 479226 Paraformal-dehyd wird bei einer Temperatur von 60-70 °C unter gleichzeitigem Einleiten vom Ammoniak in Wasser eingetragen, und nach Abkuhlen durch Zusatz konzentrierter Salpetersaure das Dinitrat bei etwa 0 °C auskristallisiert. 

Synonyms AI3-26806 BFV Caswell No. 465 CCRIS 315 Dormol EINECS 200-001-8 EPA pesticide chemicai code 043001 FA Fannoform Formalin Formalin 40 Formalith Formic aldehyde Formol FYDE HOCH Ivalon Karsan Lysoform Methaldehyde Methanal Methyl aldehyde Methylene glycol Methylene oxide Morbicid NCI-C02799 Oxomethane Oxy-methylene Paraform RCRA waste number U122 Superlysoform UN 1198 UN 2209. 

Oxybutynin Oxybutynin, 4-diethylamino-2-butynylic ester a-phenylclohexaneglycolic acid (14.1.35), is synthesized either by a Mannich reaction using propargyl ester of a-phenyl-a-cyclohexaneglycoUc acid, paraform and diethylamine, or transesterification of the methyl ester of a-phenyl-a-cyclohexaneglycolic acid using l-acetoxy-4-diethylamino-2-butene in the presence of sodium methoxide [26]. 

Of all these polymers, Paraformaldehyde is the only one which is manufd on a large commercial scale. It is also known as Paraform,... 

The base of the cation-exchange membrane is mostly phenolsulfonic add. This is condensated with formaldehyde or paraform in an add medium (61, 68, 116, 119, 133, 171). Sulfonated alkyl-aryl ethers are also used (32,10). Instead of sulfonic-acid groups, sometimes carboxylic groups are introduced (10). 

A procedure based on condensation with phenol and paraform (used as formaldehyde source) was developed to convert spent UNEX solvent (CCD, PEG-400, Ph2-CMPO, and FS-13) into a solid infusible resin for disposal. The resulting material is insoluble in aqueous alkali and acidic solutions and organic solvents. Incorporation of FS-13 in the cross-linked polymer was confirmed by physicochemical methods. Resistance of the cured resin to high temperatures was proven by thermogravimetry... 

Eine rechtsgangige und eine linksgangige Helix sind Enantiomere, wenn ihre Bausteine, wie im Falle von Poly(oxymethylen) (Paraform-aldehyd), keine weiteren stereogenen Einheiten besitzen. 

INEOS Oxide INEOS ChlorVinyls INEOS Enterprises INEOS Films Compounds INEOS NOVA INEOS Phenol INEOS Paraform INEOS Vinyls... 

INEOS NOVA INEOS GROUP LIMITED INEOS Oxide INEOS GROUP LIMITED INEOS Paraform INEOS GROUP LIMITED INEOS Phenol INEOS GROUP LIMITED INEOS Sihcas PQ CORPORATION INEOS Vinyls INEOS GROUP LIMITED Inergy Automotive Systems COMPAGNIE PLASTIC OMNIUM... 

Selective haloalkylation of aromatic compounds has also been achieved by employing alkyl haloalkyl ethers as the haloalkylating agents, as seen from equations (88) and (89). However, the use of chlo-romethyl ethers in chloromethylation (equation 89) is discouraged due to the carcinogenic nature of the ether substrate. As an alternative, chloromethylation reactions can also be carried out using paraformal-dehyde-HCl in the presence of ZnCh or SnCU as catalyst. ... 

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