Check the listing for details. Sodium Persulfate, 4oz, Reagent Grade 98% Pure, Sturdy Bottle SHIPS SAME DAY. Condition: New. Listed at 6.95 USD. 15.00 Sodium Persulfate Na2S2O8 Weight 4 Ounce Volume 4 Fluid Ounce Chemical Formula Na2S2O8 Purity Ultra-Pure 98+% Grade Reagent Grade Consistency Fine Powder CAS Number 7775-27-1 You are purchasing 4 Ounces (by weight) of Sodium Persulfate. The item ships in a 4 Fluid Ounce Polypropylene bottle. Sodium Persulfate; also known as Sodium Peroxodisulfate; has hundreds of uses. For more information, go to: http://en.wikipedia.org/wiki/Sodium_persulfate CAUTION This product is a strong oxidizer. It is not flammable itself but will oxidize other combustible materials. It reacts strongly with metals. FREE EXPEDITED SHIPPING We ship THREE TIMES A DAY, 7-Days a week. Your item is guaranteed to be in the mail the SAME DAY you place your order. Transit time from California is 2-4 days throughout the USA. Our bottles are made of sturdy polypropylene. We shrink-wrap the screw tops and seal the bottles in plastic to ensure a spill-free journey.