Chloroform soluble extractives

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August undefined, 2024

Webwith the extractives limitations pre-scribed in paragraph (c) of this section: Provided, That the components of the food-contact surface consist entirely of one or more of the substances identi-fied in this paragraph: And provided fur-ther, That if the paper or paperboard when extracted under the conditions prescribed in paragraph (c) of this sec- WebMelamine-formaldehyde resins may be safely used as the food-contact surface of molded articles intended for use in producing, manufacturing, packing, processing, preparing, treating, packaging, transporting, or holding food in …

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WebJan 17, 2024 · (i) The net acidified chloroform-soluble extractives shall not exceed 0.02 milligram/square inch 2 (0.003 milligram/square centimeter) of food-contact surface … WebOct 12, 2024 · Chloroform soluble extractive in paper and paperboard; Sensory test; Total extractives from water and n-hexane for rubber articles; Peroxide residue; Specific … claire gilchrist wedding

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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, Webpresent study includes soluble extractive values and physicochemical analysis of bark of Sesbania .sesban . EXPERIMENTAL SECTION Method recommended in … WebJan 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... down fill double sleeping bag

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GC-MS analysis of chloroform soluble water extractives in …

WebThe autoclave extraction of Hungarian oak (Quercus frainetto Ten.) wood gave 5.3% extractives. The chloroform soluble fraction obtained from the extracts of Q. frainetto allows to identify sesamin. The insoluble fraction contains mainly ribose and mannose. Water extraction in autoclave of thermo-treated Q. frainetto wood gave a lower amount of ... WebChloroform-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 … down filled accent chairsWebMar 30, 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 … claire goffard theux

"Webaqueous soluble fraction (AQSF), chloroform soluble fraction (CSF), carbon tetrachloride soluble fraction (CTCSF), and ... The plant extractives were involved in thrombolytic, cytotoxic, and ... " - Chloroform soluble extractives

Chloroform soluble extractives

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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. … Web( 2) The net acidified chloroform-soluble extractives from paper and paperboard complying with § 176.170 of this chapter may be corrected for wax, petrolatum, and mineral oil as provided in § 176.170 (d) (5) (iii) ( b) of this chapter.

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WebDISCLAIMER: Data and information released from the Standards Incorporated by Reference databases at NIST are provided on an "AS IS" basis, without representation or warranty of any kind, including without limitation the warranties of merchantability, fitness for a particular purpose and non-infringement. Web(b) The finished food-contact article, when extracted with the solvent or solvents characterizing the type of food and under the conditions of time and temperature characterizing the conditions of its intended use as determined from tables 1 and 2 of § 176.170(c) of this chapter, yields net chloroform-soluble extractives (corrected for zinc ...

Web (1) Specifications. Chloroform-soluble extractives shall not exceed 0.2 milligram/inch 2 of food -contact surface when... (2) Conditions of use. The plastics are intended for: WebDescription: 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 …

Web( c) The finished food-contact article, when extracted at reflux temperatures for 2 hours with the following four solvents, yields net chloroform-soluble extractives in each extracting solvent not to exceed 0.02 milligram per square inch of food-contact surface: distilled water, 50 percent (by volume) ethyl alcohol in distilled water, 3 percent … WebThe chloroform soluble fraction demonstrated the highest inhibition against microbial growth having zone of inhibition as 8-12 mm. In the brine shrimp lethality bioassay, The LC50 values of n-hexane and chloroform soluble fractions were found 3.713 6 μg/mL, and 0.910 μg/mL respectively while the LC50 values of standard Vincristine sulphate ...

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.

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 … claire goffic instagramWeb( ii) Acidified chloroform-soluble extractives residue. Add 3 milliliters of 37 percent ACS reagent grade hydrochloric acid and 3 milliliters of distilled water to the evaporating dish containing the dried and weighed residue, e, obtained in paragraph (e) (6) (i) of this section. claire gleghornWebCalculate the percentage of water, alcohol, chloroform and petroleum ether soluble extractive value with reference to the air dried drug. The results are shown in the following table:- Table No. 1. Physico-chemical parameters: Parameters evaluated Value(% w/w) Moisture content 5.2% Total Ash Value 8.4% Water soluble Ash value 4.7% claire glass cleanerWebJan 17, 2024 · (2) The net acidified chloroform-soluble extractives from paper and paperboard complying with § 176.170 of this chapter may be corrected for wax, petrolatum, and mineral oil as provided in §... down fill country usaWebMay 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 … claire goldbergWebChloroform fraction of alcohol extractives 1. Plasticized polymers, including unvulcanized or vulcanized or otherwise cured natural and synthetic rubber … down fill count coatsWebGC-MS analysis of the chloroform soluble and insoluble fractions was also used. Accelerated Solvent Extraction (ASE) 110 °C, Soxhlet, and autoclave extraction techniques were used to obtain... claire gogan realtor