Rochelle Salt for Piezoelectric Crystals from China
Rochelle salt for piezoelectric crystals is high-purity potassium sodium tartrate grown into large single crystals. It is a separate chemically defined compound with an alcohol function, classified under the tariff item for salts of tartaric acid. These crystals are used in early microphones and transducers.
Duty Rate — China → Canada
0%
Import Tips
• Confirm that the crystals are not considered optical elements, which would be excluded from Chapter 29
• Provide technical specifications and purity data to CBSA
• Ensure the product is not put up in forms for retail sale that might change classification