SN/T 1478: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| SN/T 1478-2024 | English | RFQ |
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3 days [Need to translate]
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(Determination of titanium dioxide in imported and exported cosmetics)
| Valid |
SN/T 1478-2024
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| SN/T 1478-2004 | English | 199 |
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2 days [Need to translate]
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Determination of titanium dioxide in cosmetics. ICP-AES
| Obsolete |
SN/T 1478-2004
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PDF similar to SN/T 1478-2024
Basic data | Standard ID | SN/T 1478-2024 (SN/T1478-2024) | | Description (Translated English) | (Determination of titanium dioxide in imported and exported cosmetics) | | Sector / Industry | Commodity Inspection Standard (Recommended) | | Classification of Chinese Standard | Y42 | | Classification of International Standard | 71.100.70 | | Date of Issue | 2024-12-16 | | Date of Implementation | 2025-06-01 | | Issuing agency(ies) | General Administration of Customs | SN/T 1478-2004: Determination of titanium dioxide in cosmetics. ICP-AES---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Determination of titanium dioxide in cosmetics.ICP-AES
Book of the People's Republic of China Entry and Exit Inspection and Quarantine
Method for detecting titanium dioxide content in cosmetics
ICP-AES method
ICP-AES
Released on November 11,.2004
2005-04-01 implementation
People's Republic
The General Administration of Quality Supervision, Inspection and Quarantine issued
Foreword
This standard is proposed and managed by the National Certification and Accreditation Administration.
This standard was drafted by the China Academy of Inspection and Quarantine.
The main drafters of this standard. Wang Xing, Li Xiang, Wang Chao, Zhang Qing.
This standard is the first industry standard for entry-exit inspection and quarantine.
Method for detecting titanium dioxide content in cosmetics
ICP-AES method
1 Scope
This standard specifies the method for determination of titanium dioxide in cosmetics.
This standard applies to the inspection of titanium dioxide content in cosmetics.
2 Method summary
The sample was digested with a mixed acid of sulfuric acid and nitric acid to clarify the sample solution, and then made up to volume with water, and the content was determined by ICP-AES.
3 reagents
Unless otherwise stated, the reagents used were of analytical grade and the water was deionized water.
3.1 Nitric acid (ρ20=1.42g/mL).
3.2 Sulfuric acid (ρ20=1.84g/mL).
3.3 Hydrofluoric acid (ρ20=1.13g/mL).
3.4 Sulfuric acid (5%, volume fraction). 5 mL of sulfuric acid (3.2) was slowly added to 95 mL of water.
3.5 Standard stock solution of titanium. Weigh 0.5000g of titanium metal (99.99%) in a platinum dish, dissolve it with hydrofluoric acid (3.3), sulfuric acid (3.2), add
The heat is evaporated to the sulfur trioxide white smoke to remove the fluorine. Dissolve in 5% (volume fraction) sulfuric acid (3.4) and bring to volume in a 500 mL volumetric flask. this
The solution contained titanium 1 mg/mL.
3.6 Titanium standard series. Titanium standard stock solution is diluted with 5% (volume fraction) sulfuric acid (3.4) and made into titanium containing 0.0μg/mL.
A standard series of solutions of 1.0 μg/mL, 10.0 μg/mL, and 100.0 μg/mL.
4 Instruments and equipment
ICP-AES spectrometer.
5 Analysis steps
5.1 Sample processing
According to the content of titanium dioxide in the sample, weigh 0.02g ~ 0.2g sample, accurate to 1mg, in a 50mL beaker, add
5mL nitric acid (3.1), 3mL sulfuric acid (3.2) covered the watch, slowly digested on the electric stove until the sulfur trioxide white smoke (the remaining in the beaker)
2.5 mL of sulfuric acid), the sample is digested to clarification (if black carbonization occurs, carefully add nitric acid while covering the watch). Take off the cold
However, make up to 50mL volumetric flask with water (concentrated sulfuric acid in the cup, be careful). Also do a blank experiment.
5.2 Determination
5.2.1 Instrument conditions According to the instrument operating procedures, the working conditions of the instrument can also be adjusted.
5.2.2 Reference conditions
5.2.2.1 Frequency. 40MHz.
5.2.2.2 RF power. 1300W.
5.2.2.3 Auxiliary gas. 0.5L/min.
5.2.2.4 Cooling gas. 15L/min.
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