HOME   Cart(0)   Quotation   About-Us Policy PDFs Standard-List
www.ChineseStandard.net Database: 189759 (19 Oct 2025)

YS/T 240.4-2024 English PDF

YS/T 240.4: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
YS/T 240.4-2024EnglishRFQ ASK 3 days [Need to translate] (Chemical analysis method for bismuth concentrate - Part 4: Determination of tungsten trioxide content - Sodium thiosulfate iodometric method) Valid YS/T 240.4-2024
YS/T 240.4-2007English239 Add to Cart 3 days [Need to translate] Methods for chemical analysis of bismuth concentrate. Determination of tungsten trioxide content. Thiocyanate spectrophotometric method Obsolete YS/T 240.4-2007

Basic data

Standard ID YS/T 240.4-2024 (YS/T240.4-2024)
Description (Translated English) (Chemical analysis method for bismuth concentrate - Part 4: Determination of tungsten trioxide content - Sodium thiosulfate iodometric method)
Sector / Industry Nonferrous Metallurgy Industry Standard (Recommended)
Classification of Chinese Standard H13
Classification of International Standard 77.120.99
Date of Issue 2024-10-24
Date of Implementation 2025-05-01
Older Standard (superseded by this standard) YS/T 240.4-2007
Issuing agency(ies) Ministry of Industry and Information Technology
Summary This standard specifies the method for determining the tungsten trioxide content in bismuth concentrate by thiocyanate spectrophotometry. This standard is applicable to the determination of tungsten trioxide content in bismuth concentrate, with a determination range (mass fraction) of 0.20% to 5.00%.