YS/T 358.2-2011Methods for chemical analysis of tantalite, columbite concentrate. Part 2: Determination of titanium dioxide content. Diantipyrinyl methane spectrophotometric method (English PDF)
钽铁、铌铁精矿化学分析方法 第2部分：二氧化钛量的测定 双安替吡啉甲烷分光光度法
YS/T 358.2 | Evolution and historical versions
| Std ID | Title | Status |
|---|---|---|
| YS/T 358.2-2025 | Methods for chemical analysis of tantalite, columbite concentrates—Part 2: Determination of titanium dioxide content—Di antipyrinyl methane spectrophotometry and inductively coupled plasma atomic emission spectrometry | Valid |
| YS/T 358.2-2011 | Methods for chemical analysis of tantalite, columbite concentrate. Part 2: Determination of titanium dioxide content. Diantipyrinyl methane spectrophotometric method | Obsolete |
YS/T 358.2-2011 is obsolete. It has been replaced by YS/T 358.2-2025. This page sells the obsolete edition, for projects and contracts that still cite it.
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Issued by
Ministry of Industry and Information Technology
Level / Type
National · Recommended
Issue date
December 20, 2011
Implementation date
July 1, 2012
Scope
YS/T 358.2-2011 is the English-translated version of 钽铁、铌铁精矿化学分析方法 第2部分：二氧化钛量的测定 双安替吡啉甲烷分光光度法.
YS/T 358.2-2011 is the Chinese industry standard "Methods for chemical analysis of tantalite, columbite concentrate. Part 2: Determination of titanium dioxide content.
Diantipyrinyl methane spectrophotometric method". It was issued on December 20, 2011 by the Ministry of Industry and Information Technology, and took effect on July 1, 2012. It is obsolete: it has been replaced by YS/T 358.2-2025.
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Document preview — YS/T 358.2-2011
National Standard of the People's Republic of China
Issued by: Ministry of Industry and Information Technology
Contents
- Document data
1 Document data
Sector: National Recommended (industry standard).
Issuing body: Ministry of Industry and Information Technology.
Date of issue: 2011-12-20.
Date of implementation: 2012-07-01.
Status: obsolete, replaced by YS/T 358.2-2025.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — all pages — is available in the English PDF.
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Related Standards
YS/T 358.3-2011 — Methods for chemical analysis of tantalite, columbite concentrate. Part 3: Determination of silicon dioxide content. Silicomolybdenum blue spectrophotometry and gravimetry
YS/T 358.1-2011 — Methods for chemical analysis of tantalite, columbite concentrate. Part 1: Determination of tantalum and niobium content. Gravimatric of paper chromatography method
YS/T 358.4-2011 — Methods for chemical analysis of tantalite, columbite concentrate. Part 4: Determination of tungsten trioxide content. Thiocyanate spectrophotometric method
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