磷酸三钠，无色白色针状结晶或结晶性粉末，十二水合物熔点73.4°C。溶于水，其水溶液呈强碱性；不溶于乙醇、二硫化碳。是磷酸盐工业的重要产品系列之一，由于其特殊的性质，广泛应用于现代化工、农牧业、石油、造纸、洗涤剂、陶瓷等领域。

Trisodium phosphate, colorless to white acicular crystal or crystalline powder, dodecahydrate, melting point 73.4 ° C. Soluble in water, its aqueous solution is strongly alkaline; Insoluble in ethanol and carbon disulfide. It is one of the important product series of phosphate industry. Because of its special properties, it is widely used in modern chemical industry, agriculture and animal husbandry, petroleum, papermaking, detergent, ceramics and other fields.

在干燥空气中易潮解风化，生成磷酸二氢钠和碳酸氢钠。在水中几乎完全分解为磷酸氢二钠和氢氧化钠.加热55～65°C成十水物，加热60～100°C成六水物，加热到100°C以上成为一水物，加热到212°C以上成为无水物。1%的水溶液pH值为11.5～12.1。

It is easy to be deliquescent and weathered in dry air to form sodium dihydrogen phosphate and sodium bicarbonate. It is almost completely decomposed into disodium hydrogen phosphate and sodium hydroxide in water When heated to 55 ~ 65 ° C, it becomes decahydrate, when heated to 60 ~ 100 ° C, it becomes hexahydrate, when heated to more than 100 ° C, it becomes monohydrate, and when heated to more than 212 ° C, it becomes anhydrous. The pH value of 1% aqueous solution is 11.5 ~ 12.1.

在化工、纺织、印染、造纸、发电等行业中用作软水剂和洗涤剂，锅炉防垢剂，纸张染色中的软水剂，生产蜡光纸用胶黏剂的酸碱度缓冲剂，印染时的固色剂，织物的丝光增强剂，制线的防脆剂。冶金工业用作化学去油、去污，用作照相显影溶液中的优良促进剂。牙齿清洁剂和瓶器的洗涤剂。橡胶乳汁的凝固剂。糖汁净化剂。

In the chemical, textile, printing and dyeing, papermaking, power generation and other industries, it is used as a water softener and detergent, a boiler scale inhibitor, a water softener in paper dyeing, a pH buffer for the production of adhesive for waxed paper, a color fixing agent for printing and dyeing, a mercerization enhancer for fabrics, and an anti embrittlement agent for thread making. Metallurgical industry is used for chemical degreasing and decontamination, and as an excellent accelerator in photographic development solution. Tooth cleaner and bottle detergent. A coagulant for rubber milk. Sugar juice purifier.

固体磷酸三钠(TSP)属于强碱弱酸盐，具有较强的碱性和较高的溶解度，化学性质稳定，能够长期保存，在壳喷淋系统(EAS)的喷淋水中添加TSP替代NaOH,能够调节喷淋液的pH值，有效地除去从泄漏的冷却水中释放壳中的碘气体，避免强碱对工作人员的伤害，易于事故后的清理。

Solid trisodium phosphate (TSP) is a strong alkali weak acid salt, with strong alkalinity and high solubility. It has stable chemical properties and can be stored for a long time. Adding TSP to the spray water of the containment spray system (EAS) instead of NaOH can adjust the pH value of the spray liquid, effectively remove the iodine gas released into the containment from the leaked cooling water, avoid the injury of the strong alkali to the staff, and facilitate the cleaning after the accident.

虽然说磷酸三钠能作为清洗剂中的铝缓蚀剂和钢铁的缓蚀剂，与硬水中的钙、镁盐反应，成为不溶性的磷酸钙和磷酸镁盐。但是这些磷酸盐没有粘性，不会像肥皂的钙、镁盐那样粘在织物上，更方便清洗。使用时用量要适中，它的碱性比较强，而且会污染水源。所以氢氧化钾厂家建议大家不要磷酸三钠作为清洗剂洗衣服！

Although trisodium phosphate can be used as aluminum corrosion inhibitor and steel corrosion inhibitor in cleaning agents, it reacts with calcium and magnesium salts in hard water to become insoluble calcium phosphate and magnesium phosphate. However, these phosphates are not sticky and will not stick to the fabric like the calcium and magnesium salts of soap, which is more convenient for cleaning. When used, the dosage should be moderate. Its alkalinity is relatively strong, and it will pollute the water source. Therefore, potassium hydroxide manufacturers suggest that we do not use sodium phosphate as a detergent to wash clothes!

使用注意事项

Precautions for use

1、不慎与眼睛接触后，请立即用大量清水冲洗并征求医生意见。

1. In case of contact with eyes, rinse immediately with plenty of water and consult a doctor.

2、穿戴适当的防护服、手套和护目镜或面具。

2. Wear appropriate protective clothing, gloves and goggles or masks.

3、若发生事故或感不适，立即就医(可能的话，出示其标签)。

3. In case of accident or discomfort, seek medical attention immediately (show the label if possible).

急救措施

First aid measures

皮肤接触：脱去污染的衣着，立即用大量流动清水彻底冲洗少15分钟。就医。

Skin contact: take off contaminated clothes, and immediately wash thoroughly with a large amount of flowing water for at least 15 minutes. Seek medical attention.

眼睛接触：立即翻开上下眼睑，用流动清水或生理盐水冲洗少15分钟。就医。

Eye contact: immediately open the upper and lower eyelids and rinse with flowing water or normal saline for at least 15 minutes. Seek medical attention.

吸入：迅速脱离现场空气新鲜处。保持呼吸道通畅。呼吸困难时给输氧。呼吸停止时，立即进行人工呼吸。就医。

Inhalation: quickly leave the site to a place with fresh air. Keep respiratory tract unobstructed. Give oxygen when breathing is difficult. When breathing stops, give artificial respiration immediately. Seek medical attention.

食入：误服者立即漱口，给饮牛奶或蛋清。就医。

Ingestion: rinse mouth immediately and drink milk or egg white. Seek medical attention.

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