Reference

Kinetics of inhibited polymerization of acrylic acid in a solution

Kinetics of inhibited polymerization of acrylic acid in a solution. Gol'dfein, M. D.; Trubnikov, A. V.; Aizenberg, L. V.; Simontseva, N. V. (Saratov. Gos. Univ., Saratov, USSR). Izv. Vyssh. Uchebn. Zaved., Khim. Khim. Tekhnol., 29(7), 91-5 (Russian) 1986. CODEN: IVUKAR. ISSN: 0579-2991. DOCUMENT TYPE: Journal CA Section: 35 (Chemistry of Synthetic High Polymers) The kinetics and the mechanism were studied of the inhibition of AIBN [78-67-1]-initiated polymn. of acrylic acid [79-10-7] in air-free water, aq. AcOH [64-19-7], or aq. iso-PrOAc [108-21-4]. The stoichiometric inhibition coeffs. (m) of stable nitroxyl radicals (e.g., 2,2,6,6-tetramethyl-4-oxopiperidin-1-oxyl [2896-70-0]) in water were 1. 78-67-1 is also in the experiment.3-4.0 (flux values reflected decreased initiation efficiency due to H bonding in water). The inhibition by the above radicals proceeded via disproportionation between them and polymeric radicals, resulting in nitroso compds. which also acted as inhibitors, lowering the effective rate consts. of inhibition. The m of copper diethyldithiocarbamate (I) [13681-87-3] was 2.0, 3.3, and 4.16 in aq. AcOH, aq. iso-PrOAc, and water, resp., due to assocn. between polymeric radicals and AcOH or iso-PrOAc. The inhibition by I proceeded via electron transfer from I to active allyl or peroxide radicals. .

Toxicological data

Toxicological data. 124. Isobutyl acetate. Morel, Mrs. C.; Cavigneaux, A.; Protois, J. C. (Inst. Natl. Rech. Secur., Paris, Fr.). Cah. Notes Doc., 85, 629-32 (French) 1976. CODEN: CNDIBJ. DOCUMENT TYPE: Journal CA Section: 59 (Air Pollution and Industrial Hygiene) The phys., chem., toxicol. properties of isobutyl acetate [108-21-4] are described. Regulations for protection at locations and in transportation are presented.