HG/T 2424-2012 in English

VALID

Calcium Stearate

Issued on:2012-12-28
Implemented on:2013-06-01
File Format:PDF
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Price(USD)： $60.00
$59.00

Standard No:	HG/T 2424-2012
Document status:	VALID
Title in English:	Calcium Stearate
Title in Chinese:	硬脂酸钙
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	2012-12-28
Implemented on:	2013-06-01
Superseding:	HG/T 2424-1993 Calcium Stearate (Light)
Professional Classification:	HG-Chemistry
Related Keywords:	calcium stearate edition standard name calcium stearate calcium stearate introduction core changes calcium content calcium indicator
Related Topics:	hg/t 4475-2012 hg/t+4475-2012 Free Fatty Acids in Calcium Stearate Calcium stearate hg/t 4462-2012 Titanium stearate hg/t 4463-2012 Calcium Stearate Free Fatty Acid stearic acid hg/t 4488-2012 Calcium Stearate Free Fatty Acid hg/t+4463-2012 Organic and inorganic stearic acid hg/t 4471-2012 hg/t 4480-2012 hg t 4182 2012 Stearic acid+ Potassium stearate stearic acid tridecyl stearate stearic acid UV Potassium stearic acid barreled stearic acid calcium antimonate barreled stearic acid Niobium stearate stearic acid UV cobalt stearate calcium Stearic acid in alcohol Calcium stearate detection Calcium stearate test Calcium hardness determination Calcium ferrite preparation Industrial grade calcium stearate products Aluminum stearate detection Industrial grade calcium stearate Stearic acid detection method Calcium stearate industry Calcium hardness test hg/t 3556-2012 hg/t 4182-2012 hg/t 4478-2012 hg/t 4467-2012 hg/t 4470-2012 hg/t 20618-2012 hg/t 4474-2012 hg/t 4472-2012

本标准规定了硬脂酸钙的要求、试验方法、检验规则、标志、包装、运输和贮存。
本标准适用于工业硬脂酸与钙化合物反应制得的硬脂酸钙。

Introduction

Core changes in the standard revision

Revision dimensions	1993 edition	2012 edition
Standard name	Calcium stearate (lightweight)	Calcium stearate
Technical indicators	Including bulk density test	Delete bulk density item
Test method	Free acid molar mass 172	Adjusted to 284

Analysis of key technical requirements

Determination of calcium content

EDTA titration method is used, key steps:

The sample is digested with nitric acid-ethanol system
End point determination with calcium indicator (NN)
Parallel determination allowable difference ≤0.20%

Rubber industry application case

When a tire factory uses calcium stearate as a release agent, controlling the calcium content at 6.5±0.3% can optimize the vulcanization efficiency.

Key points for optimizing the detection method

Improvements in free acid determination

Added ethanol filtration procedure to improve detection accuracy
Molar mass in the calculation formula was adjusted from 172 to 284
Tolerance tightened to ≤0.10%

Implementation suggestions

Key points for quality control

Indicators	Control requirements	Detection frequency
Fineness	≥99.5% passing 0.075mm sieve	Per batch
Melting point	140-160℃	Every week

Packaging, storage and transportation specifications

Woven bags lined with plastic film should be used. Contact with acidic and alkaline substances should be avoided during transportation. The storage temperature is recommended to be controlled below 25℃.

More samples: NB/T 47013.2-2015 DL/T 5154-2012 GB 50021-2001(2009)

Sample only — not a preview of HG/T 2424-2012

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