Dar-chem

Dar Chem. [Unichema] Fatty acids emollient, lubricant for cosmetics, detergent systems, laundry prods., texdle specialdes, candles, buffing compds. 

Synonyms cas 57-11-4 century dar-chem emersol glycon groco i-heptadecanecarboxylic acid... 

Darzen s procedure org chem Preparation of alkyl halides by refluxing a molecule of an alcohol with a molecule of thionyl chloride in the presence of a molecule of pyridine. dar-zonz pr3,se- 3r ... 

Darzen s reaction org chem Condensation of aldehydes and ketones with a-haloesters to produce glycidic esters. dar-zonz re.ak-shon ... 

Diels-Alder reaction org chem The 1,4 addition of a conjugated diolefin to a compound, known as a dienophile, containing a double or triple bond the dienophile may be activated by conjugation with a second double bond or with an electron acceptor. jdelz jal-dar re,ak-shan ... 

Friedlander synthesis org chem A synthesis of quinolines the method is usually catalyzed by bases and consists of condensation of an aromatic p-amino-carbonyl derivative with a compound containing a methylene group in the alpha position to the carbonyl. fred.lan dar. sin-tha-sas ... 

Van Deemter rate theory analychem A theory that the sample phase in gas chromatography flows continuously, not stepwise. van dam tar rat. the a re ) van der Waals adsorption physchem Adsorption in which the cohesion between gas and solid arises from van der Waals forces. van dar, w6lz ad.sorp shan ) van der Waals attraction See van der Waals force. van dar, w6lz a.trak shan ) van der Waals covolume physchem The constant b in the van der Waals equation, which is approximately four times the volume of an atom of the gas in question multiplied by Avogadro s number. van dar, w6lz ko val yam ) van der Waals equation phys chem An empirical equation of state which takes into account the finite size of the molecules and the attractive forces between them p = RT/(v — b) - (a/v ). where p is the pressure, v is the volume per mole, T is the absolute temperature, R is the gas constant, and a and b are constants. van dar, w6lz i,kwa-zhan ... 

F. Micheel and W. Spruck, liber eine weitere Dar-stellungsmethode fiir Zucker-Derivate mit sieben-gliedrigem Ringe (Septanosen), Ber. Dtsch. Chem. Ges. B, 67B (1934) 1665-1667. 

A. Kossel. Bemerkuttgen zu der Mitteilung des Herrn Sigmund Fr nkel Uber Dar-stellung und Konstitution des Histidins . Zeit. physiol. Chem., 1903, 39, 212. 

H. Henkel, and Ch. Hebecker Uber den Fluorierungsverlauf bei der Dar-stellung ternarer Fluoride mit elementarem Fluor, Internat. Symposium on Fluorine Chem. Munich. Abstr. 186 (1965). 

MARAFC. 3 -0-Methyl-l-/9-D-arabinofuranosylcytosine (C10H15N3O5). Bimbaum GI, Dar-zynkiewicz E, Shugar D (1975) J Am Chem Soc 97 5904 MBDGAL. Methyl /9-D-galactopyranoside (C7H140g). Sheldrick B (1977) Acta Crystallogr, Sect B 33 3003... 

Fritsch, P., Ober ein neues Verfahren zur Dar-stellung von p-Alkyloxybcnylanilin und dessen Homologen,ZzeWg.tAnn. Chem., 31.5, 138, 1901. 

N34.85% yel ejq>l residue obtained by Curtius Darapsky from freshly pptd Ce hydroxide dissolved in hydrazoic acid and evapn of the soln formed (Refs 1 2). No references to ejq>l props found Refs 1)T.Curtius Sc A.Dar sky, JPrakt Chem 61, 408(1900) JCS 78 U, 474(1900)... 

Chiung-Fang Chien, Jen-Dar Wu, Tai Wei Ly, Kak-Shan Shia and Hsing-Yang Liu, Chem. Commun.,(Cambridge), 2002,248. 

Dar, Y.L. Caneba, G.T. Transport phenomena aspect of the free-radical retrograde-precipitation polymerization process. Chem. Eng. Commun. 2002, 189 (5), 751-607. 

HOF/DAR] Hoffmann, M. M., Darab, J. G., Palmer, B. J., Fulton, J. L., A transition in the Ni complex structure from six- to four- coordinate upon formation of ion pair species in supercritical water, an x-ray absorption fine structure, near-infrared, and molecular dynamics study, J. Phys. Chem. A, 103, (1999), 8471-8482. Cited on pages 141, 142. 

Haber, F. and LeRossignol, R. Uber die Techiiische Dar-stellung von Ammoniak aus den Elementen. Z. Elektro-chem. jp, 53-72 (1913). Good abstiact in Met. Chem. Eng. II, 211-4 (1913)-Fundamentals of the process. 

Stereospecific Introduction of Carbon Monoxide into Metal Carbonyl Chelate Complexes, W. J. Knebel, R. J. Angelici, O. A. Gansow, and D. J. Dar-rensburg, J. Organometal. Chem., 66, Cll (1974). 

Manuf/Distrib. Akzo Nobel Arakawa USA Bayer AG Celanese Chemical Croda Resins Ltd D.B. Becker DSM UK Dar-Tech Degen EMCO Chem. Distributors Eastech GFI L.V. Lomas McWhorter Tech. PPG Ind. Prism Inti RanbarTecli. Scott Bader Seegotl Thibaut Walker U.S. Polymers Whyte Chems. Ltd... 

---