Standard No.:	GB/T 15057.3-1994
Chinese Name:	化工用石灰石中盐酸不溶物含量的测定 重量法
English Name:	Limestone for chemical industry- Determination of insoluble matter content of hydrochloric acid- Gravimetric method
Professional Classification:	D53 Building material raw material ore
Professional Classification:	GB National Standard
ICS Classification:	73.080
Issued by:
Issued on:	1994-05-05
Implemented on:	1995-02-01
Status:	VALID
Language:	English
File Format:	PDF
Word Count:	1000 words
Price(USD):	30 (USD)
Delivery:	via email in 1-3 business day

1 Subject Content and Application Scope

This standard specifies the determination of insoluble matter content of hydrochloric acid by gravimetric method.

This standard is applicable to the determination of insoluble matter content of hydrochloric acid in limestone products for chemical industry and the determination range is 0.5%~10%.

2 Normative Reference

GB 6682 Water for Analytical Laboratory Use - Specification and Test Methods

3 Method Summary

Decompose the specimen with hydrochloric acid, filter the mixture, ignite and weigh the residue to obtain the insoluble matter of hydrochloric acid.

4 Reagents and Solutions

Water used in this standard shall conform to the specification of Grade 3 water specified in GB 6682; unless otherwise specified, the adopted reagents refer to analytical reagents.