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About product and suppliers:
        Alibaba.com offers 12,301 food grade caustic soda products. About 96% of these are alkali, 1% are carbonate, and 1% are food additives. 

A wide variety of food grade caustic soda options are available to you, such as industrial grade, food grade, and agriculture grade. You can also choose from caustic soda, calcium hydroxide, and carbonate. As well as from free samples. 

There are 12,112 food grade caustic soda suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Brazil, and Thailand, which supply 98%, 1%, and 1% of food grade caustic soda respectively. 

Food grade caustic soda products are most popular in South Asia, Eastern Asia, and Southeast Asia. 

You can ensure product safety by selecting from certified suppliers, including 2,086 with ISO9001, 568 with Other, and 76 with ISO14001 certification.