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Sodium hypophosphite

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


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Patent
17 Sep 2004
TL;DR: In this paper, an electroless copper plating solution that realizes uniform plating at lower temperatures is proposed. But the method is not suitable for semiconductor wafer or other such mirror surface on which a plating reaction hardly occurs.
Abstract: An object is to provide an electroless copper plating solution that realizes uniform plating at lower temperatures, when the electroless copper plating is performed on a semiconductor wafer or other such mirror surface on which a plating reaction hardly occurs. An electroless copper plating solution, wherein, along with a first reducing agent, hypophosphorous acid or a hypophosphite is used as a second reducing agent, and a stabilizer to inhibit copper deposition is further used at the same time. Examples of the first reducing agent include formalin and glyoxylic acid, while examples of the hypophosphite include sodium hypophosphite, potassium hypophosphite, and ammonium hypophosphite. Examples of the stabilizer to inhibit copper deposition include 2,2'-bipyridyl, imidazole, nicotinic acid, thiourea, 2-mercaptobenzothiazole, sodium cyanide, and thioglycolic acid.

6 citations

Patent
26 Apr 2017
TL;DR: In this article, an aromatherapy skin-protection type non-ironing finishing liquid for shirts and a finishing method is described. Butane tetracarboxylic acid, ammonium citrate, triethanolamine, malic acid, sodium hypophosphite, tartaric acid and a stilbene disulfonic acid derivative.
Abstract: The invention discloses aromatherapy skin-protection type non-ironing finishing liquid for shirts and a finishing method. The finishing liquid is prepared from butane tetracarboxylic acid, ammonium citrate, triethanolamine, malic acid, sodium hypophosphite, tartaric acid, a stilbene disulfonic acid derivative, a siloxane acetone body, triethylene glycol, polyvinyl alcohol, chitosan, N,N-dimethyl formamide sodium alginate, plant essence, calcium chloride, polyaspartic acid, methyl cellulose, sodium polyacrylate, fatty acid polyethylene oxide, an appropriate amount of maleic anhydride and an appropriate amount of deionized water. A preparation method of the finishing liquid is simple, natural aromatic substances and fabric can be ingeniously combined to well pacify the body and mind, and the finishing liquid improves subhealth, is mild for skin, natural, free of stimulation, healthy and safe; finished ready-to-wear shirts can be washed with a machine, do not need to be ironed, and are quite resistant to wrinkles, good in color retention, soft in hand feeling and high in serviceability.

6 citations

Patent
Yuji Nishio1, Yasukazu Iwamoto1
07 Nov 2007
TL;DR: In this paper, the authors proposed a washing storage solution, which can substantially remove contaminants such as transition metals and alkali metals deposited on the surface of a glass electrode that comprises a glass comprising lithium and can restore performances as an electrode such as responsiveness and reproducibility in the measurement to an initial state or a state better than the initial state.
Abstract: This invention provides a washing storage solution (22), which can substantially completely remove contaminants such as transition metals and alkali metals deposited on the surface of a glass electrode that comprises a glass comprising lithium and can restore performances as an electrode such as responsiveness and reproducibility in the measurement to an initial state or a state better than the initial state. The washing storage solution (22) is characterized by comprising at least one reducing reagent having a reduction behavior. Examples of reducing reagents include hydroxylammonium chloride, sodium hyposulfite, sodium hydrogen sulfite, sodium thiosulfate, sodium hypophosphite, ascorbic acid, and titanium oxide.

6 citations

Journal ArticleDOI
TL;DR: In this paper, the composition, structure, and electrocatalytic properties in HER are compared for ReNi electrodeposits and Ni-Re-P alloys synthesized by chemical-catalysis deposition with the use of sodium hypophosphite as the reducer.
Abstract: The composition, structure, and electrocatalytic properties in HER are compared for Re–Ni electrodeposits and Ni–Re–P alloys synthesized by chemical-catalytic deposition with the use of sodium hypophosphite as the reducer. The coordination numbers of nickel and rhenium and the interatomic distances of synthesized materials are determined by EXAFS and XANES methods. It is shown that the structure of Re‒Ni catalysts with the highest catalytic activity lacks the far order as regards the position of rhenium and nickel atoms, which allows assuming that these electrode materials are in the amorphous state. For chemical-catalytic Ni–Re–P coatings, it is shown that the introduction of rhenium into their composition lowers down the phosphorus content in the alloy formed. The chemical-catalytic Ni–Re–P coatings show promise as the HER catalysts in acid solutions.

6 citations

Patent
19 Apr 2019
TL;DR: In this article, a preparation method of a MOF-derived layered double hydroxide electrocatalyst with a hollow structure was revealed, which belongs to the technical field of synthesis of new energy electrocatalysts.
Abstract: The invention discloses a preparation method of a MOF-derived layered double hydroxide electrocatalyst with a hollow structure, and belongs to the technical field of synthesis of new energy electrocatalysts. According to the technical scheme, the electrocatalyst is characterized in that the MOF-derived electrocatalyst prepared under the condition that the mass of a phosphorus source sodium hypophosphite is 150 mg, and the pyrolysis temperature is 200 DEG C has the optimal performance, through further characterization research, self-template in-situ pseudocrystals of MOF are transformed into ahollow skeleton structure with the surface rich in layered double hydroxide, and compared with most phosphides, the MOF-derived electroactive material obtained by using the preparation method shows adesired porous structure and is rich in oxidation-reduction chemical activity and excellent in electrical conductivity.

6 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202315
202234
202125
202051
2019116
201890