磷酸三鈉，無色至白色針狀結(jié)晶或結(jié)晶性粉末，十二水合物熔點73.4°C。溶于水，其水溶液呈強堿性；不溶于乙醇、二硫化碳。是磷酸鹽工業(yè)的重要產(chǎn)品系列之一，由于其特殊的性質(zhì)，廣泛應(yīng)用于現(xiàn)代化工、農(nóng)牧業(yè)、石油、造紙、洗滌劑、陶瓷等領(lǐng)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.
在干燥空氣中易潮解風(fēng)化，生成磷酸二氫鈉和碳酸氫鈉。在水中幾乎完全分解為磷酸氫二鈉和氫氧化鈉.加熱至55～65°C成十水物，加熱至60～100°C成六水物，加熱到100°C以上成為一水物，加熱到212°C以上成為無水物。1%的水溶液pH值為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、紡織、印染、造紙、發(fā)電等行業(yè)中用作軟水劑和洗滌劑，鍋爐防垢劑，紙張染色中的軟水劑，生產(chǎn)蠟光紙用膠黏劑的酸堿度緩沖劑，印染時的固色劑，織物的絲光增強劑，制線的防脆劑。冶金工業(yè)用作化學(xué)去油、去污，用作照相顯影溶液中的優(yōu)良促進(jìn)劑。牙齒清潔劑和瓶器的洗滌劑。橡膠乳汁的凝固劑。糖汁凈化劑。
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.
固體磷酸三鈉(TSP)屬于強堿弱酸鹽，具有較強的堿性和較高的溶解度，化學(xué)性質(zhì)穩(wěn)定，能夠長期保存，在安全殼噴淋系統(tǒng)(EAS)的噴淋水中添加TSP替代NaOH,能夠調(diào)節(jié)噴淋液的pH值，有效地除去從泄漏的冷卻水中釋放至安全殼中的碘氣體，避免強堿對工作人員的傷害，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.

雖然說磷酸三鈉能作為清洗劑中的鋁緩蝕劑和鋼鐵的緩蝕劑，與硬水中的鈣、鎂鹽反應(yīng)，成為不溶性的磷酸鈣和磷酸鎂鹽。但是這些磷酸鹽沒有粘性，不會像肥皂的鈣、鎂鹽那樣粘在織物上，更方便清洗。使用時用量要適中，它的堿性比較強，而且會污染水源。所以氫氧化鉀廠家建議大家不要磷酸三鈉作為清洗劑洗衣服！
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!
使用注意事項
Precautions for use
1、不慎與眼睛接觸后，請立即用大量清水沖洗并征求醫(yī)生意見。
1. In case of contact with eyes, rinse immediately with plenty of water and consult a doctor.
2、穿戴適當(dāng)?shù)姆雷o(hù)服、手套和護(hù)目鏡或面具。
2. Wear appropriate protective clothing, gloves and goggles or masks.
3、若發(fā)生事故或感不適，立即就醫(yī)(可能的話，出示其標(biāo)簽)。
3. In case of accident or discomfort, seek medical attention immediately (show the label if possible).
急救措施
First aid measures
皮膚接觸：脫去污染的衣著，立即用大量流動清水徹底沖洗至少15分鐘。就醫(yī)。
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.
眼睛接觸：立即翻開上下眼瞼，用流動清水或生理鹽水沖洗至少15分鐘。就醫(yī)。
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：迅速脫離現(xiàn)場至空氣新鮮處。保持呼吸道通暢。呼吸困難時給輸氧。呼吸停止時，立即進(jìn)行人工呼吸。就醫(yī)。
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：誤服者立即漱口，給飲牛奶或蛋清。就醫(yī)。
Ingestion: rinse mouth immediately and drink milk or egg white. Seek medical attention.
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