Sodium persulfate: also called sodium persulfate. The appearance is white crystalline powder, odorless. It can dissolve in water and decompose gradually. Humidity and high temperature can accelerate the decomposition. It can be decomposed by ethanol and silver ions. The solubility in water is 549g/L at 20 ℃. The relative density is 2.400 (bulk density: 0.7). Low lethal dose (rabbit, vein) 178 mg/kg.

过硫酸钠处于高氧化态，具有强氧化性，易分解并放出氧和热量的物质。包括含有过氧基的有机物，其本身不一定可燃，但能导致可燃物的燃烧，与松软的粉末状可燃物能组成爆炸性混合物，对热、震动或摩擦较敏感。

Sodium persulfate is in a high oxidation state, with strong oxidation, easy to decompose and release oxygen and heat. It includes organic substances containing peroxy groups, which are not necessarily flammable, but can cause the combustion of combustibles. They can form explosive mixtures with soft powdery combustibles and are sensitive to heat, vibration or friction.

过硫酸钠被广泛用于氧化剂；还作用于电池去极剂和聚合反应促进剂。

Sodium persulfate is widely used as oxidant; It also acts as battery depolarizer and polymerization accelerator.

过硫酸铵：外观为无色单斜晶体，有时略带浅绿色，有潮解性。为过二硫酸的铵盐。过二硫酸根含有过氧基，是强氧化剂。在１２０℃时分解放出氧并生成焦硫酸盐。过二硫酸铵是强氧化剂，可以把Ｍｎ２＋氧化为ＭｎＯ４－。电解硫酸氢铵的水溶液即可制得过二硫酸铵。

Ammonium persulfate: colorless monoclinic crystal, sometimes slightly light green, deliquescence. It is ammonium salt of persulfuric acid. Persulfate contains peroxy group and is a strong oxidant. At 120 ℃, oxygen is liberated and pyrosulfate is formed. Ammonium persulfate is a strong oxidant, which can oxidize Mn2+to MnO4 -. Ammonium persulfate can be prepared by electrolyzing the aqueous solution of ammonium bisulfate.

过硫酸铵被广泛用作醋酸乙烯、丙烯酸酯等烯类单体乳液聚合的引发剂；还用作脲醛树脂的固化剂，固化速度快；淀粉胶黏剂的助氧化剂，与淀粉成分中的蛋白质反应提高粘接性，参考用量为淀粉的０．２％～０．４％；也用作金属铜表面处理剂。在化学工业用作制造过硫酸盐和双氧水的原料，有机高分子聚合时的助聚剂、氯乙烯单体聚合时的引发剂。用作小麦改质剂、啤酒酵母防霉剂。

Ammonium persulfate is widely used as initiator for lotion polymerization of vinyl monomers such as vinyl acetate and acrylate; It can also be used as curing agent of urea formaldehyde resin, with fast curing speed; The auxiliary oxidant of starch adhesive reacts with the protein in the starch component to improve the adhesion, and the reference dosage is 0.2%~0.4% of starch; It is also used as a surface treatment agent for metal copper. In the chemical industry, it is used as the raw material for the production of persulfate and hydrogen peroxide, the polymerization promoter for organic polymer polymerization, and the initiator for vinyl chloride monomer polymerization. Used as wheat quality improver and beer yeast mildew inhibitor.