Sodium hypophosphite

About: Sodium hypophosphite is a research topic. Over the lifetime, 1695 publications have been published within this topic receiving 15932 citations.

Magnesium alloy chemical plating nickel solution and method

Abstract: The invention discloses a magnesium alloy chemical plating nickel solution and method. The solution comprises the following parts: a basic chemical plating nickel solution and an acidic plating nickelsolution, wherein PH value of the basic chemical plating nickel solution is 7.5-9.5, per liter comprises 10g-30g nickel sulfate, 20g-30g sodium citrate, 4g-16g sodium hypophosphite, 10g-30g baking soda, PH value of the acidic chemical plating nickel solution is 4.0-6.0, per liter comprises 10g-30g nickel sulfate, 8g-20g sodium citrate, 10g-20g sodium acetate, 6g-30g sodium hypophosphite. The method comprises the following steps: a, preprocessing; b, proceeding with grit blasting on the surface; c, cleaning with supersonic wave; d, preprocessing the surface; e, neutralizing; f, plating nickelwith the basic chemistry; g, plating nickel with the acidic chemistry; h, baking. The invention solves the problem of the high cost and the pollution.

Synthesis and biological activity of 3-(2, 8, 9-trioxa-aza-1-germatricyclo [3. 3. 3. 0] undecane-1-yl)-caffeic acid.

Abstract: The new germanium compound of caffeic acid, (1), has been obtained to compare anti-tumor activities with 3-(2, 8, 9-trioxa-aza-1-germatricyclo[3. 3. 3. 0]undecane-1-yl)-hydroxycinnamic acids which have been researched previously. Compound was prepared which mainly used caffeic acid, germanium dioxide, sodium hypophosphite, triethanolamine as materials by reducing reaction, Micheal addition reaction and transesterification. The structure is comfirmed by (1)H-NMR and MS. Biological investigation has demonstrated that the compound is stronger anti-tumor activity than 3-(2, 8, 9-trioxa-aza-1-germatricyclo[3. 3. 3. 0]undecane-1-yl)-hydroxylcinnamic acids with lower toxicity.

An Enhanced Oxidation of Formate on PtNi/Ni Foam Catalyst in an Alkaline Medium

Abstract: In this study, a platinum-coated Ni foam catalyst (denoted PtNi/Ni foam) was investigated for the oxidation of the formate reaction (FOR) in an alkaline medium. The catalyst was fabricated via a two-step procedure, which involved an electroless deposition of the Ni layer using sodium hypophosphite as a reducing agent and the subsequent electrodeposition of the platinum layer. The PtNi/Ni foam catalyst demonstrated enhanced electrocatalytic activity for the FOR in an alkaline medium compared to the Ni/Ni foam catalyst and pure Pt electrode. Moreover, the PtNi/Ni foam catalyst promoted the FOR at more negative potentials than the Pt electrode. This contributed to a significant negative shift in the onset potential, indicating the high activity of the catalyst. Notably, in alkaline media with the PtNi/Ni foam catalyst, the FOR proceeds via a direct pathway mechanism without significant accumulation of poisonous carbonaceous species on the PtNi/Ni foam catalyst.

Synthetic technology of nitro-nitrogen yellow

Abstract: The process for synthesizing nitro-nitrogen yellow with H-acid as raw material includes such technological steps as hydrolysis of diazonium salt of H-acid with sodium hypophosphite to obtain RG salt, under existance of sodium hydroxide as alkaline reagent coupling said RG salt with 2,4-dinitroaniline diazonium salt to obtain crude product, dissolving in aqueous solution of sodium hydroxide, filtering, acid deposition with glacial acetic acid, heating in water bath, vacuum filtering and drying, and features high product purity and technical specification.