GB/T 639-1986Chemical reagents--Sodium carbonate, anhydrous (English PDF)
化学试剂 无水碳酸钠
GB/T 639 | Evolution and historical versions
| Std ID | Title | Status |
|---|---|---|
| GB/T 639-2008 | Chemical reagent - Sodium carbonate anhydrous | Valid |
| GB/T 639-1986 | Chemical reagents--Sodium carbonate, anhydrous | Obsolete |
GB/T 639-1986 is obsolete. It has been replaced by GB/T 639-2008. This page sells the obsolete edition, for projects and contracts that still cite it.
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Issued by
National Bureau of Standards
Level / Type
National · Recommended
Issue date
August 13, 1986
Implementation date
July 1, 1987
Scope
GB/T 639-1986 is the English-translated version of 化学试剂 无水碳酸钠.
GB/T 639-1986 is the Chinese national standard "Chemical reagents--Sodium carbonate, anhydrous". It was issued on August 13, 1986 by the National Bureau of Standards, and took effect on July 1, 1987. It is obsolete: it has been replaced by GB/T 639-2008.
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Document preview — GB/T 639-1986
National Standard of the People's Republic of China
Issued by: National Bureau of Standards
Contents
- Document data
1 Document data
Sector: National standard (Recommended).
Issuing body: National Bureau of Standards.
Date of issue: 1986-08-13.
Date of implementation: 1987-07-01.
Status: obsolete, replaced by GB/T 639-2008.
......
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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