GB 4374.7-1984 Chemical analysis methods for magnesium powder and aluminum-magnesium alloy powders - Gravimetric method for determination of hydrochloric acid insoluble matter
Basic Information
Standard ID:
GB 4374.7-1984
Standard Name: Chemical analysis methods for magnesium powder and aluminum-magnesium alloy powders - Gravimetric method for determination of hydrochloric acid insoluble matter
Chinese Name:
镁粉和铝镁合金粉化学分析方法 重量法测定盐酸不溶物量
Standard category:National Standard (GB)
state:Abolished
Date of Release1984-04-30
Date of Implementation:1985-04-01
Date of Expiration:2005-10-14
standard classification number
Standard ICS number:Metallurgy>>Non-ferrous metals>>77.120.20 Magnesium and magnesium alloys
Standard Classification Number:Metallurgy>>Metal Chemical Analysis Methods>>H12 Light Metal and Its Alloy Analysis Methods
associated standards
Publication information
other information
Review date:2004-10-14
Drafting unit:Northeast Light Alloy Processing Plant
Focal point unit:National Technical Committee for Standardization of Nonferrous Metals
Publishing department:China Nonferrous Metals Industry Association
competent authority:China Nonferrous Metals Industry Association
Introduction to standards:
GB 4374.7-1984 Chemical analysis methods for magnesium powder and aluminum-magnesium alloy powders Gravimetric determination of hydrochloric acid insoluble matter GB4374.7-1984 standard download decompression password: www.bzxz.net
Some standard content:
中华人民共和国国家标准
镁粉和铝镁合金粉化学分析方法重量法测定盐酸不溶物量
Methods for chemical analysis of magnesium powdersand aluminium -magnesium alloy powdersThe gravimetric method for the determinationof insoluble content in hydrochloric acid本标准适用1镁粉中盐酸不溶物量的测定。测定范固：不人于0.20%。本标准遵宇GB1467-78《治金产品化学分析方法标准的总则及般规定》，方法提要bZxz.net
UDC 669.721 + 669
715'721-492
GB 4374.7-84
试样用盐酸溶解后，过滤并灼烧残渣，根据盐酸不溶物质量计算其百分含量。试剂
2.1盐酸（1+1）。
2.2硝酸银溶液（1%）。
高温炉。
分析步骤
4.1测定数量
行测两份试样，取其均值
4.2试样量
称取5.00g试样。
4.3测定
4.3.1将试样（4.2）置于500ml烧杯中，用少量水润湖。4.3.2缓慢加人90ml盐酸（2.1），待试样完全溶解后点沸1min，取下，用定滤纸过滤，并用热水洗涤至滤出液用硝酸银溶液（2.2）检查无氨离了反应为出。4.3.3将滤纸及語酸不溶物（4.3.2置于己灼烧并称至恒肚的瓷址蜗中，先1炉灰化，然后催高温炉」700C灼烧40min，取壮，置于「燥器中，冷即全室温，称最，并重复灼烧全恒最。5
分析结果的计算
按下武让算喆酸不溶物的百分舍鼠：盐酸不溶物（%）
式中：m，--增埚利盐酸不溶物的质量，g；国家标准局19840430发布
19850401实施
充许差
性蜗的质最，；
试样最，g。
GB4374.7-84
实验室之间分析结果的差值应不大下表所列允许差。战酸不溶物鼠
.0.050
-.05 ～ 1.10
0.10~0.20
附加说明：
本标准由中华人民共利用金工业部提出，本标准的东北轻合金加！负资起草本标准山东北轻合金加广、西北加广起草。本标准主要起草人尤贵法、“亚车。162
充许差
-HTi KAoNi KAca-
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