1Key Takeaways
In the nitric acid solution of the sample, potassium permanganate is reacted with a manganous salt. The precipitate formed, which quantitatively carries tin, antimony, and thallium, is dissolved in sulfuric acid. Tin and antimony are separated from manganese and thallium as sulfides; antimony is separated from tin usin…
2Scope / Description
In the nitric acid solution of the sample, potassium permanganate is reacted with a manganous salt. The precipitate formed, which quantitatively carries tin, antimony, and thallium, is dissolved in sulfuric acid. Tin and antimony are separated from manganese and thallium as sulfides; antimony is separated from tin using hydrosulfuric acid in an oxalic acid solution; tin precipitates as a sulfide from an acetate solution and is weighed as a bismuth oxide. Procedure. Calculation.
6Frequently Asked Questions
What is UNI 4775:1961?
UNI 4775:1961 — Procedures for chemical analysis of metals. Determination of tin in cadmium. Weight method. is an international standard developed by Ente Nazionale Italiano di Unificazione. In the nitric acid solution of the sample, potassium permanganate is reacted with a manganous salt. The precipitate formed, which quantitatively carries tin, antimony, and thallium, is dissolved in sulfuric acid. Tin and antimony are separated from...
What does UNI 4775:1961 cover?
This standard covers: In the nitric acid solution of the sample, potassium permanganate is reacted with a manganous salt. The precipitate formed, which quantitatively carries tin, antimony, and thallium, is dissolved in sulfuric acid. Tin and antimony are separated from manganese and thallium as sulfides; antimony is...
Who should use this standard?
This standard is intended for organizations, professionals, and stakeholders involved in various industries and sectors. It is applicable to manufacturers, service providers, regulatory bodies, and certification organizations.
What is the latest version of UNI 4775:1961?
The current published version is UNI 4775:1961, published on 1961-07-31. Always check for amendments or pending revisions.
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