... %max,pH :9-10Packing:25kg plastic woven bag,25mt/20'FCL TESTSPECIFICATION 1 Appearancewhite granular2 Assay ≥94%3 Alkali ... 3% sodium hydroxide solution, insoluble precipitate; part by adding 24% hydrochloric acid, then dissolved. (4) to neutral to take the sample ... added to prevent the formation of insoluble in water, sorbic acid - acid crystals, affecting food preservative effect. 2. Scope and usage ...