Section 06 PRODUCTS OF THE CHEMICAL OR ALLIED INDUSTRIES 29 Organic chemicals 29 31 Other organo-inorganic compounds. 29 31 34 Sodium 3-(trihydroxysilyl)propyl methylphosphonate 29 31 34 00 Sodium 3-(trihydroxysilyl)propyl methylphosphonate Commodity Code Description 29 31 34 00 00 Sodium 3-(trihydroxysilyl)propyl methylphosphonate