Powder for removing surface stains of silverware

Abstract

The invention discloses a powder for removing surface stains of silverware, belongs to the technical field of silverware cleaning maintenance and aims at solving the problem of the surface stain removal of the silverware. The powder is prepared from the following components in parts by weight: 1-15 parts of thiourea, 1-15 parts of citric acid, 1-15 parts of tartaric acid, 1-3 parts of ethylenediamine tetraacetic acid disodium, 1-15 parts of sodium hypophosphite, 1-2 parts of sodium hexametaphosphate, 0.1-0.2 part of sodium methylene dinaphthalenesulfonate, 0.01-0.02 part of benzotriazole and 0.02-0.03 part of 2-mercaptobenzothiazole. In use, the powder is dissolved into water to obtain a 10-20% silver washing solution for soaking or scrubbing the silverware to remove the surface stains of the silverware. The powder is convenient to store and transport, capable of effectively treating silver-coated articles or the silverware with elaborate patterns, and also convenient and safe to operate.

Description

technical field [0001] The invention relates to a powder for cleaning silverware, in particular to a powder for removing stains on the surface of silverware. Background technique [0002] After the silverware is in contact with the air or human sweat for a long time, black spots or yellow spots will appear on the surface. The main component of this black or yellow stain is silver sulfide, and there are also small amounts of silver chloride and silver oxide. Currently, these stains can be removed by physical or chemical methods: [0003] The physical method is to apply physical and mechanical force on the surface of the silverware, and remove the stain from the surface of the silverware by physical means such as grinding and polishing. For example, silver wiping cloths, silver wiping sticks, silver wiping pastes and silver wiping creams, which are suitable for households and factories, are sold on the market, and the stains on the surface of silverware can be removed by rub...

AI Technical Summary

Problems solved by technology

The disadvantage is that when active metals such as magnesium are used, the magnesium is oxidized quickly, and a large amount of hydrogen gas is easily generated, resulting in waste; this method requires the active metal to be as close as possible to the surface of the silverware, and the operation is more cumbersome; magnesium powder is not easy to store and has certain safety hazards

[0006] Physical and chemical methods work together, such as smearing borax water on silverware, burning it with fire, then boiling it in alum water in a copper pot, washing it with water and cleaning it with a copper brush, the silverware will be as bright as new, but there are also The operation is cumbersome, causing damage to the surface of the silverware, etc.