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About product and suppliers:
        Alibaba.com offers 22,407 sodium hydroxide 99% products. About 99% of these are alkali, 1% are other chemicals, and 1% are sulphate. 

A wide variety of sodium hydroxide 99% options are available to you, such as industrial grade, agriculture grade. You can also choose from free samples, paid samples. 

There are 22,599 sodium hydroxide 99% suppliers, mainly located in Asia. The top supplying countries are China (Mainland), South Africa, and India, which supply 99%, 1%, and 1% of sodium hydroxide 99% respectively. 

Sodium hydroxide 99% products are most popular in Southeast Asia, Africa, and South Asia. 

You can ensure product safety by selecting from certified suppliers, including 5,214 with Other, 3,348 with ISO9001, and 94 with ISO14001 certification.