| 释义 |
Definition of dichromate in English: dichromatenoun dʌɪˈkrəʊmeɪtdaɪˈkroʊmeɪt Chemistry A salt, typically red or orange, containing the anion Cr₂O₇²⁻ 〔化〕重铬酸盐 Example sentencesExamples - The breath sample is bubbled in one vial through a mixture of sulfuric acid, potassium dichromate, silver nitrate and water.
- Common oxidants include the halogens (especially fluorine and chlorine), oxygen, ozone, potassium permanganate, potassium dichromate, nitric acid, and concentrated sulfuric acid.
- Certain salts, such as the dichromates, borates, and silicates, act as inhibitors to the aqueous corrosion of zinc.
- Potassium dichromate is an oxidizer and therefore presents a fire hazard.
- The most regularly employed oxidizing agent for this set of reactions is a mixture called chromic acid, a mixture of sodium or potassium dichromate and sulfuric acid.
OriginMid 19th century: from di-1 'two' + chromate. Definition of dichromate in US English: dichromatenoundīˈkrōmātdaɪˈkroʊmeɪt Chemistry A salt, typically red or orange, containing the anion Cr₂O₇²⁻ 〔化〕重铬酸盐 Example sentencesExamples - Common oxidants include the halogens (especially fluorine and chlorine), oxygen, ozone, potassium permanganate, potassium dichromate, nitric acid, and concentrated sulfuric acid.
- The breath sample is bubbled in one vial through a mixture of sulfuric acid, potassium dichromate, silver nitrate and water.
- Potassium dichromate is an oxidizer and therefore presents a fire hazard.
- The most regularly employed oxidizing agent for this set of reactions is a mixture called chromic acid, a mixture of sodium or potassium dichromate and sulfuric acid.
- Certain salts, such as the dichromates, borates, and silicates, act as inhibitors to the aqueous corrosion of zinc.
OriginMid 19th century: from di- ‘two’ + chromate. |