SN/T 4776-2017 in English

VALID

Footwear—Determination of the emission of volatile organic compounds—Small chamber method

Issued on:2017-05-12
Implemented on:2017-12-01
File Format:PDF
Delivery:Via email within 1~3 business days

Price(USD)： $310.00
$301.00

Standard No:	SN/T 4776-2017
Document status:	VALID
Title in English:	Footwear—Determination of the emission of volatile organic compounds—Small chamber method
Title in Chinese:	鞋类挥发性有机化合物释放量试验小型释放舱法
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	2017-05-12
Implemented on:	2017-12-01
Professional Classification:	SN-Import&Export Inspection
Related Keywords:	small chamber method introduction standard overview small chamber load factor volatile organic compounds footwear determination calculation method
Related Topics:	release amount Microplates of various organic compounds WPC Volatile Organic Compounds Method for determination of volatile organic compounds (voc) and aldehyde compounds released from construction adhesives in vitro drug release Volatility of organic reagents Total Volatile Organic Compound Measurement Type b2 volatile organic compounds organic polar compound wild drug release Release test In vitro release test method release drug drug release small release chamber Test method for organotin compound content in rubber shoes Category b2 - Volatile Organic Compounds Test method for organic volatile compounds in footwear intrinsic release mechanism drug release in vitro small release chamber method GB/T 4776-2017 zero order release GB/T4776-2017 Related to the distribution of hazardous chemicals lipid release Methods for determining drug release Methods for quantitative drug release Sexual compound method development Release methodology validation gb/t 4776-2017 sn/t 4953-2017 t4776-2017 sn/t 4972-2017 sn/t 4921-2017 Total Volatile Organic Compounds Test Method gbt4776-2017

Introduction

Standard Overview and Technical Background

SN/T 4776-2017 specifies the

Sample pretreatment

The sample needs to be equilibrated at (23±2)℃ and (50±5)%RH for 72 hours. A thermal desorption tube is used to collect the released gas. The recommended sampling flow rate is 100-200mL/min.

Analytical Conditions Example

GC-FID: DB-5 column (60m×0.25mm×0.25μm), temperature program 30℃ (2min)→60℃ (10℃/min)→200℃ (10min)
GC-MS: ion source temperature 250℃, scan range 25-350m/z

Technology Evolution Analysis

Compared with SN/T 3778-2014, the main improvements of this standard include:
1. Added characteristic contaminants of shoe adhesives such as N,N-dimethylformamide
2. Optimized the calculation method of the small chamber load factor
3. Clarified the 28-day long-term release test plan

Implementation Recommendations

Preferably use Air Toxic Adsorption Tubes for sample collection
Regularly verify the background concentration in the chamber (≤20μg/m³ TVOC)
For PU shoe materials, pay special attention to the release of toluene diisocyanate

More samples: JC/T 2453-2018 JJG 21-2008 YD/T 3934-2021

Sample only — not a preview of SN/T 4776-2017

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