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US Customs Ruling (CROSS)

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Issuing Country : UNITED STATES

Date Of Issue : 2019-07-03T00:00:00

4-Hydroxy-4'-Isopropoxy Diphenyl Sulfone

The tariff classification of 4-Hydroxy-4'-Isopropoxy Diphenyl Sulfone from China. The substance has the chemical name 4-Hydroxy-4'-Isopropoxy Diphenyl Sulfone. It is also known by the commercial name D8, and CAS Number 95235-30-6. It is supplied as a white to light colored powder. You state that the substance is already imported into USA by producers in Japan and China and is supplied as a >99% pure material. The remaining less than 1% being residual raw materials and by products of the production process which are difficult to remove. The instant product is stated to function as a developer for photographic and printing use. In further manufacture, a colorformer and developer are coated onto the paper as a ‘thermal’ layer and dried at low temperature, to create a white surface on the paper. When heat is applied to the paper by the print mechanism the developer melts to produce an acidic liquid which can react with the colorformer in the thermal layer to cause the color change from white to black and thereby produce an image on the thermal paper.

Description : 4-Hydroxy-4'-Isopropoxy Diphenyl Sulfone

Source : US Customs Ruling (CROSS)
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European Customs Inventory of Chemical Substances

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Issuing Country : European Union Countries

Description : 4-{[4-(propan-2-yloxy)phenyl]sulfonyl}phenol

Source : European Customs Inventory of Chemical Substances
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EU Harmonized Tariff Schedule

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4-(4-Isopropoxyphenylsulphonyl)phenol (CAS RN 95235-30-6)

Source : EU Harmonized Tariff Schedule