Reference

Aqueous formaldehyde solutions

Aqueous formaldehyde solutions. Davis, Martin Thomas (Imperial Chemical Industries PLC, UK). Brit. UK Pat. Appl. GB 2120924 A1 14 Dec 1983, 7 pp. (English). (United Kingdom). CODEN: BAXXDU.Chemicals with cas numbers 9003-05-8 and 7664-93-9 also play role. CLASS: IC: A23K003-02. APPLICATION: GB 83-13257 13 May 1983. PRIORITY: GB 82-15860 1 Jun 1982. DOCUMENT TYPE: Patent CA Section: 17 (Food and Feed Chemistry) A silage preservative comprises an aq. soln. of H2CO [50-00-0] (5-40%), 0.05-2.5% (by wt. of H2CO) polyacrylamide [9003-05-8] or methyl vinyl ether-maleic anhydride copolymer (I) [9011-16-9] as vapor release suppressants, and, optionally, a mineral acid (1-9 vol. H2CO:1 vol 5M acid). Thus, to an aq. preservative soln. contg. 50% by wt. of 37% H2CO and 20% by wt. H2SO4 (expressed as 100% acid), I (1.7% by wt. of H2CO) was added and the compn. was used to treat fresh grass at 5 mL/kg. At 15 min after treatment, before any protein binding occurred, grass samples treated with preservative soln. contg. I retained 1650 ppm H2CO compared with 1260 ppm H2CO for grass treated with H2CO soln. but not. contg I. .

Detection of endogenous free formaldehyde in plants and its relationship with photosynthesis

Detection of endogenous free formaldehyde in plants and its relationship with photosynthesis. Szarvas, T. B.; Pozsar, B. I.; Simon, L. P. (Isot. Inst., Hung. Acad. Sci., Budapest, Hung.In this article, certain chemicals are used. One of their cas registry numbers is 50-00-0 ). Acta Agron. Acad. Sci. Hung., 32(3-4), 313-30 (English) 1983. CODEN: AASHAB. ISSN: 0001-513X. DOCUMENT TYPE: Journal CA Section: 11 (Plant Biochemistry) In expts. with corn, the formation of endogenous, free formaldehyde during photosynthesis was demonstrated using the product of the formaldehyde reaction with dimedone (5,5-dimethylcyclohexane-1,3-dione) as an indicator of free formaldehyde. Photorespiratory studies demonstrated free formaldehyde not to be formed during photorespiration. A new pathway for formaldehyde in C fixation, connected to the Calvin cycle, is thus demonstrated. .