GB/T 9104.8-1988 Test method for industrial stearic acid - Determination of ash content
Basic Information
Standard ID:
GB/T 9104.8-1988
Standard Name: Test method for industrial stearic acid - Determination of ash content
Chinese Name:
工业硬脂酸试验方法 灰分的测定
Standard category:National Standard (GB)
state:Abolished
Date of Release1988-04-30
Date of Implementation:1988-10-01
Date of Expiration:2008-12-01
standard classification number
Standard ICS number:Chemical Technology>>Organic Chemistry>>71.080.40 Organic Acid
Standard Classification Number:Chemicals>>Organic Chemical Raw Materials>>G17 General Organic Chemical Raw Materials
Publication information
publishing house:China Standards Press
Publication date:1988-10-01
other information
Release date:1988-04-30
Review date:2004-10-14
Drafting unit:Daily Chemical Research Institute of the Ministry of Light Industry
Focal point unit:National Technical Committee on Standardization of Surfactants and Detergents
Publishing department:China Light Industry Federation
competent authority:China Light Industry Federation
Introduction to standards:
GB/T 9104.8-1988 Test method for industrial stearic acid - Determination of ash content GB/T9104.8-1988 Standard download decompression password: www.bzxz.net
Some standard content:
National Standard of the People's Republic of ChinabZxz.net
Test methods for industrial stearic acids--Determination of ash
1 Subject content and scope of application
This standard specifies the method for the determination of ash in industrial stearic acid. UDC 668.1.012
：543.06
GB 9104.8—88
This standard applies to the determination of ash in industrial stearic acid produced by pressing or distillation after hydrolysis of animal and vegetable fats. 2 Apparatus
2.1 Porcelain crucible 50mL.
2.2 Dryer.
2.3 High temperature electric furnace
3 Test procedure
It can be heated to at least 1000℃.
Accurately weigh about 10 samples into the porcelain that has been burned to constant weight, heat it on an electric furnace and ignite it to completely carbonize it. Then move it into a high-temperature furnace at 800-850℃, burn it into grayish white (about 0.5h), move it to a dryer to cool for 1.5h, weigh 4 results and calculate
where A
ash content, %
ash content and the mass of the porcelain crucible, g,
the mass of the empty porcelain crucible, 8,
the mass of a sample, 8.
The allowable error of the parallel test results is 0.005%. Additional remarks:
This standard is proposed by the Ministry of Light Industry of the People's Republic of China. m
This standard is under the technical jurisdiction of the Daily Chemical Industry Science Research Institute of the Ministry of Light Industry. This standard is drafted by the Daily Chemical Industry Science Research Institute of the Ministry of Light Industry. This standard is equivalent to the determination of ash content in Japanese Industrial Standard JISK 3331 "Industrial Hardened Oil Fatty Acids". Approved by the Ministry of Light Industry of the People's Republic of China on April 30, 1988 and implemented on October 1, 1988
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