Chloroform soluble extractives
WebThe finished food contact article, when extracted at reflux temperatures for 2 hours with the following four solvents, yields in each extracting solvent net chloroform soluble extractives not to exceed 0.05 milligrams per square inch of food contact surface: Distilled water, 50 percent (by volume) ethanol in distilled water, 3 percent acetic acid …
Chloroform soluble extractives
Did you know?
WebMay 19, 2024 · Chloroform extract does not necessarily represent toxic molecules but potentially harmful stuff. Secondly chloroform extraction is analytical chemist friendly- after extraction the analysis can be directly carried out in a gas or a liquid chromatograph for … WebMar 25, 2024 · Net chloroform soluble extractives for 50 % alcohol fraction 氯仿可溶萃取物（50%酒精浸取法） Net chloroform soluble extractives for n-heptane fraction 氯仿可溶萃取物（正庚烷浸取法） 木材要求U.S. FDA CFR 21 178.3800 Pentachlorophenol and its salt 五氯苯酚PCP ABS要求U.S. FDA CFR 21 181.32 or 180.22. in water 去离子水浸取法 …
Webaqueous soluble fraction (AQSF), chloroform soluble fraction (CSF), carbon tetrachloride soluble fraction (CTCSF), and ... The plant extractives were involved in thrombolytic, cytotoxic, and ... Webchloroform-soluble extractives shall not exceed 0.05 milligram/square inch3 (0.078 mg/square centimeter) of food- contact surface (water, acetic acid, or ethanol/water extractions) when ex-tracted by the equilibrium method cited in paragraph (e)(2)(ii) of this sec-tion. If when exposed to n-heptane, a particular film splits along die lines,
Web( ii) Total extractives not to exceed 0.20 percent by weight of homopolymer when extracted for 6 hours with distilled water at reflux temperature and 0.15 percent by weight of homopolymer when extracted for 6 hours with n- heptane at reflux temperature. ( e) Conditions of use. Webchloroform-soluble extractives in each extracting solvent not to exceed 0.5 milligram per square inch of food-con-tact surface when tested by the meth-ods described in …
WebThe oxidation occurred mainly on the polar fraction of the extractives, and then, the solubility in chloroform increased by 12.3%. When the extraction was performed in the autoclave, MoO3 was able to induce an oxidative depolymerization of wood with the consequent increase in the extractives amount.
WebNet chloroform soluble extractives from n-heptane PASS Remark:Test results in this report are applicable for the item tested and reflects the tested sample as received. … fitness centers in bristol ctWebnot availableBangladesh Pharmaceutical Journal 19(2): 233-236, 2016 fitness centers in breckenridge coWebJan 17, 2024 · (a) Oxidized polyethylene is the basic resin produced by the mild air oxidation of polyethylene conforming to the density, maximum n- hexane extractable fraction, and maximum xylene soluble... fitness centers in bradenton flWebJan 17, 2024 · (a) The coating is applied as a continuous film or enamel over a metal substrate, or the coating is intended for repeated food-contact use and is applied to any suitable substrate as a continuous... can i apply to trade school anytimeWebChloroform extract does not necessarily represent toxic molecules but potentially harmful stuff. Secondly chloroform extraction is analytical chemist friendly- after extraction the … fitness centers in binghamton nyWebChloroform-soluble extractives shall not exceed 0.2 milligram/inch 2 of food-contact surface when exposed to the following solvents at temperatures and times indicated: ( i) Distilled … can i apply to two different programsWebDetermination of Chloroform Soluble Extractive in Paper and Paperboard use as food contacting material ILT CODE: ILT-U-1848 Category: Food Description: Net chloroform soluble extractives for water fraction, for 8% alcohol fraction, for 50% alcohol fraction, and for n-heptane alcohol fraction Method: 21 CFR 176.170 Programms Description fitness centers in bolingbrook