GB/T 27842-2011Chemicals - Test method for dynamic surface tension - Fast-bubble technique (English PDF)

Foreword

This Standard is drafted in accordance with the rules given in GB/T 1.1-2009.

This Standard is the same as ASTM D3825-90.2005 "Standard test method for

dynamic surface tension by the fast-bubble technique) (English version) in terms of

technical content.

The following editorial modifications have been made in this Standard.

- REPLACE "this test method" WITH "this Standard";

- DELETE the foreword, keywords and other informative parts of the original ASTM;

- CONVERT all units and their values INTO China's legal units of measurement;

- ADD heading to the original figures and tables missing heading, and ADJUST the

number of the figures, tables and equations in the whole text.

This Standard is proposed by and is under the jurisdiction of National Technical

Committee on Hazardous Chemicals of Standardization Administration of China

(SAC/TC 251).

Drafting organizations of this Standard. China Academy of Inspection and Quarantine,

China National Chemical Economic and Technical Development Center, Jiangsu Coal

Chemical Engineering Design and Research Institute Co., Ltd., Sinochem Chemical

Standardization Institute.

Main drafters of this Standard. Li Xi, Chen Huiming, Wang Xiaobing, Yang Ting, Guo

Xinyu.

Chemicals - Test method for dynamic

surface tension - Fast-bubble technique

IMPORTANT NOTE. 1.5 This Standard does not purport to address all of the

safety concerns (if any) associated with its use. It is the responsibility of the

user of this Standard to consult and establish appropriate safety and health

practices and determine the applicability of regulatory limitations prior to use.

For specific warning statements, see 7.3, 7.4, and 7.5.

1 Scope

This Standard specifies the principle, significance and use, apparatus, reagents and

materials, calibration and standardization, test procedure, calculations and report of

the determination of dynamic surface tension using chemicals by fast-bubble

technique.

This Standard is applicable to the determination of the specific free energy of a liquid-

gas surface a short time after formation of the surface.

This Standard is applicable to liquids with vapor pressures up to 30.0 kPa and

kinematic viscosities up to 4.0 mm/s at the test temperature.

NOTE. Higher viscosities have not yet been investigated.

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 of the referenced document (including any amendments) applies.

ASTM D1193 Specification for reagent water

ASTM D1331 Test methods for surface and interfacial tension of solutions of

surface-active agents

ASTM E1 Specification for ASTM liquid-in-glass thermometers

3 Terms, definitions and symbols

7 Reagents and materials

100 mg/L CO2 with amines (Warning. Compressed gas under high pressure. See

A.3 of Annex A).

8 Calibration and standardization