Valid

HG/T 4445-2012Textile dyeing and finishing auxiliaries - Determination of dimethyl fumarate (English PDF)

纺织染整助剂富马酸二甲酯的测定

Preview PDF

This is a limited preview

Buy now to download the full PDF (15 pages)

Need quotation for your management?

Get a formal quotation for HG/T 4445-2012 in 30 minutes.

Issued by

MIIT

Level / Type

Industry · Recommended

Issue date

December 28, 2012

Implementation date

June 1, 2013

Scope

HG/T 4445-2012 is the English-translated version of 纺织染整助剂富马酸二甲酯的测定.

HG/T 4445-2012 is the Chinese standard "Textile dyeing and finishing auxiliaries - Determination of dimethyl fumarate". Its scope clause reads: This standard specifies the method for determining the dimethyl fumarate in textile dyeing and finishing auxiliaries by gas chromatography/mass spectrometry.

This standard is applicable to the determination of the dimethyl fumarate in textile dyeing and finishing auxiliaries. Its clauses include theory; reagents and materials.

Found what you need?

Document preview — HG/T 4445-2012

National Standard of the People's Republic of China

Issued by: Ministry of Industry and Information Technology of the People's Republic of China

Foreword
1 Scope
2 Normative references
3 Theory
4 Reagents and materials
5 Instruments and apparatus
6 Analytical procedures
7 Result calculation
8 Determination lower limit
9 Recovery rate
10 Precision
11 Test report
Annex A (Informative) Retention time, and qualitative and quantitative ions of dimethyl fumarate
Annex B (Informative) Gas chromatograph-mass spectrometer chromatograms of dimethyl fumarate reference material

1 Scope

This standard specifies the method for determining the dimethyl fumarate in textile dyeing and finishing auxiliaries by gas chromatography/mass spectrometry.

This standard is applicable to the determination of the dimethyl fumarate in textile dyeing and finishing auxiliaries.

2 Normative references

The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies.

GB/T 8170-2008 Rules of rounding off for numerical values & expression and judgment of limiting values

3 Theory

Using ethyl acetate as solvent, extract the dimethyl fumarate in textile dyeing and finishing auxiliaries by ultrasonic extractor, conduct qualitative and quantitative analysis on the extracting solution with a gas chromatograph-mass spectrometer, and determine the content of dimethyl fumarate in extracting solution by external standard method.

4 Reagents and materials

Unless otherwise specified, only recognized analytically pure reagents shall be adopted.

4.1 Ethyl acetate

dehydrated through 5A molecular sieve;

4.2 Dimethyl fumarate standard

with a purity >=96%;

4.3

Needle type film filter head (PTFE), 0.45µm;

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

Similar standards

HG/T 5255-2017|HG/T 6222-2023|HG/T 6223-2023|HG/T 6256-2023|HG/T 6257-2023|HG/T 4261-2022

How to Download HG/T 4445-2012

1
Add to cart
Click "Download PDF" on this page and choose "Buy this standard". You can add more standards before checkout.
2
Checkout
Enter your email and billing details. Payment is processed securely by Stripe (cards or bank transfer). Prefer bank details? Request a quotation (min. order $300).
3
Instant delivery (0–9 sec)
Delivery is automatic: within seconds of payment you'll receive an email with a secure download link. The link stays valid for 72 hours.
4
Invoice included
A tax invoice is attached to the confirmation email. Need a custom invoice? Contact us.