The standardization of ethyl silicone oil has evolved from enterprise standards to industry standards and international standards:

Early Development Stage (1960s-1980s): China first began producing methyl silicone oil in the 1960s, mainly for applications such as damping, mold release, waterproofing, and electrical insulation.

Ethyl silicone oil, as a modified product of methyl silicone oil, initially relied primarily on enterprise standards for quality control.
Group Standard Stage (2010s): In 2019, the China Fluorine and Silicon Organic Materials Industry Association released the group standard "Vinyl-Terminated Fluorosilicone Oil" (T/FSI 044—2019), specifying the product technical requirements and test methods for vinyl-terminated fluorosilicone oil. Also in 2019, the standard "Vinyl-Terminated Dimethyl Silicone Oil" (T/FSI 044—2019) was released. The group standard (018-2019) provides a testing basis for related silicone oil products.

International Standards Progress: Currently, no specific ISO or ASTM standard for ethyl silicone oil has been found, but relevant testing methods can refer to internationally accepted silicone oil analysis standards. The gas chromatography-mass spectrometry (GC-MS) technique used in the ISO international standard for the determination of organic solvents in footwear, which was led by China, can also be applied to the detection of ethyl silicone oil.

Evolution of Ethyl Silicone Oil Detection Methods: The detection technology for ethyl silicone oil has undergone a transformation from traditional chemical analysis to modern instrumental analysis:
Traditional Detection Methods:

Ethyl Content Determination:
Iodometric method: Simple to operate, suitable for routine laboratories, sensitivity is 0.5%
Iodine bromide titration method: Used for the detection of vinyl content in methyl vinylcyclosiloxanes (index value ≥31.0%) Physical Property Testing:

Viscosity Measurement: Refer to HG/T2363-1992 "Test Method for Kinematic Viscosity of Silicone Oil"
Volatile Content Detection: Traditional oven drying method requires 7-10 working days; new halogen moisture analyzers can reduce this to minutes.

Modern Testing Technologies
Spectroscopic Analysis:
Infrared Spectroscopy: Vinyl characteristic peaks are concentrated in the 830-875 cm^-1 region, with an accuracy of up to 0.2%.
Near-Infrared Spectroscopy: Used for mass fraction determination of vinyl-terminated dimethyl silicone oil.

Chromatographic Coupled Techniques:
Gas Chromatography-Mass Spectrometry (GC-MS): Can simultaneously detect multiple components, with detection limits as low as 0.1 ppb.
Gel Permeation Chromatography (GPC): Determines polymer molecular weight distribution; the Nexera system enables high-throughput analysis.