GB/T 6900.7-1986Fireclay and high-alumina refractories--Determination of magnesium oxide content--Xylidyl blue I-CTAB photometric method (English PDF)
粘土、高铝质耐火材料化学分析方法 二甲苯胺蓝I-溴化十六烷基三甲铵光度法测定氧化镁量
GB/T 6900.7 | Evolution and historical versions
| Std ID | Title | Status |
|---|---|---|
| GB/T 6900-2025 | Chemical analysis of alumino—silicate refractories | Valid |
| GB/T 6900-2016 | Chemical analysis of alumina-silica refractories | Obsolete |
| GB/T 6900-2006 | Chemical Analysis of Alumina-silica Refractories | Obsolete |
| GB/T 6900.7-1986 | Fireclay and high-alumina refractories--Determination of magnesium oxide content--Xylidyl blue I-CTAB photometric method | Obsolete |
GB/T 6900.7-1986 is obsolete. It has been replaced by GB/T 6900-2006. This page sells the obsolete edition, for projects and contracts that still cite it.
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Issued by
Standardization Administration of China
Level / Type
National · Recommended
Issue date
September 1, 1986
Implementation date
September 1, 1987
Scope
GB/T 6900.7-1986 is the English-translated version of 粘土、高铝质耐火材料化学分析方法 二甲苯胺蓝I-溴化十六烷基三甲铵光度法测定氧化镁量.
GB/T 6900.7-1986 is the Chinese national standard "Fireclay and high-alumina refractories--Determination of magnesium oxide content--Xylidyl blue I-CTAB photometric method".
It was issued on September 1, 1986 by the Standardization Administration of China, and took effect on September 1, 1987. It is obsolete: it has been replaced by GB/T 6900-2006.
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Document preview — GB/T 6900.7-1986
National Standard of the People's Republic of China
Issued by: Standardization Administration of China
Contents
- Document data
1 Document data
Sector: National standard (Recommended).
Issuing body: Standardization Administration of China.
Date of issue: 1986-09-01.
Date of implementation: 1987-09-01.
Status: obsolete, replaced by GB/T 6900-2006.
......
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
GB/T 6900.8-1986 — Fireclay and high-alumina refractories--Determination of calcium oxide and magnesium oxide content--Atomic absorption spectrophotometric method
GB/T 6900.6-1986 — Fireclay and high-alumina refractories--Determination of calcium oxide content--EDTA volumetric method
GB/T 6900.9-1986 — Fireclay and high-alumina refractories--Determination of potassium oxide and sodium oxide content--Atomic absorption spectrophotometric method
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GB/T 6900.7-1986
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