Background[1]
Zinc dihydrogen phosphate is a white triclinic crystal or white solidification substance with a low melting point. It begins to decompose at 100C, dissolves in water and decomposes, and is soluble in hydrochloric acid and alkali. Corrosive and deliquescent. Stable in air at room temperature. In the electroplating industry, it is used for anti-corrosion treatment of ferrous metal parts. Its performance is better than manganese dihydrogen phosphate. It is also used as an anti-rust phosphating treatment agent on metal surfaces. It is used as a colorant in the ceramic industry and as a clarifier in the glass industry. . This product is used as an anti-corrosion coating for ferrous metals in the electroplating industry and as a phosphating agent in the phosphating of steel products. It is a new type of non-toxic anti-rust pigment.
It is used as the base material for various types of coatings such as alkyd, phenolic, and epoxy resins, and is also used to produce non-toxic anti-rust pigments and water-soluble coatings. It is also used as a flame retardant for chlorinated rubber and synthetic polymer materials, and can also be used as a dental impression material.
Zinc dihydrogen phosphate
Apply[3]
Product Usage: It is used in the electroplating industry for anti-corrosion treatment of ferrous metal parts, and its performance is better than manganese dihydrogen phosphate; it is also used as a phosphating treatment agent for metal surface treatment, and as a colorant in the ceramic industry.
1. Comprehensive treatment agent:
Mix the zinc oxide powder into a paste with one-fifth of the total calcium phosphate water; stir the zinc oxide paste continuously, and slowly add phosphoric acid according to the formula proportion; after the phosphoric acid and zinc oxide are fully dissolved, follow the formula in turn Add zinc dihydrogen phosphate, potassium chlorate and citric acid in proportion and stir continuously; add two-fifths of the total water to dilute and stir thoroughly to dissolve the added ingredients; after dissolution, add sodium molybdate, triethanolamine and triethanolamine in sequence according to the formula proportion. Thiourea, and stir continuously to mix evenly; finally, add surfactant surfactant according to the formula proportion, and add two-fifths of the total water according to the formula proportion, and stir thoroughly to mix evenly to complete the configuration of the treatment agent; Use the prepared treatment agent to treat the object to be treated. The surfactant surfactant is replaced by a mixture of surfactant, TX-10 and SDBS in any proportion, and the total dosage is the original surfactant dosage.
Zinc dihydrogen phosphate: Zinc dihydrogen phosphate is a film-forming agent. The added Zn2+ can speed up the film-forming speed and shorten the phosphating time. At the same time, as a corrosion inhibitor, it mainly plays the role of adjusting and stabilizing the PH value, extending the service life of the treatment agent, and greatly speeding up the phosphating speed due to the increase in H2PO4- concentration.
2. Cleaning agents that shorten the cleaning process:
Provide a cleaning agent that can shorten the cleaning process, including components such as phosphoric acid, zinc dihydrogen phosphate, triethylenediamine, vanadium phosphate, tetramethylthiourea, and coconut oil diethanolamine. The content of each component of the cleaning agent that can shorten the cleaning process is: in parts by weight, 4 parts of phosphoric acid, 15 parts of zinc dihydrogen phosphate, 1 part of triethylene diamine, 14 parts of vanadium phosphate, tetramethyl sulfide 4 parts of urea and 12 parts of coconut oil diethanolamine, wherein the phosphoric acid is phosphoric acid with a mass fraction of 15%.
3. Metal treatment agent for surface treatment process of high anti-corrosion finished auto parts products:
A metal treatment agent for the surface treatment process of highly anti-corrosive finished automobile parts, consisting of the following raw materials: boric acid, phosphoric acid, triethanolamine, sericin, vinyltrimethoxysilane, urotropine, aminotrimethylenephosphonic acid, Zinc dihydrogen phosphate, tartaric acid and ferrous oxalate; the mass fractions of each raw material are: 20 parts of boric acid, 18 parts of phosphoric acid, 6 parts of triethanolamine, 2 parts of sericin, 3 parts of vinyltrimethoxysilane, urethanol 1 part of tropine, 1 part of aminotrimethylenephosphonic acid, 2 parts of zinc dihydrogen phosphate, 2 parts of tartaric acid, and 8 parts of ferrous oxalate.
Preparation[2]
Zinc oxide method: add phosphoric acid into the reactor, add zinc oxide under stirring and react at 100~120℃ to generate zinc dihydrogen phosphate, which is concentrated at 13oC and cooled Crystallize and centrifuge to obtain the finished product.
Main Reference Materials
Cabot Carbon Black
[1] Wang Rui, Zhang Hui, Huang Zhiyu. Evaluation of the effectiveness of the compound system of organic phosphonic acid corrosion inhibitors and zinc dihydrogen phosphate [J]. Progress in Fine Petrochemicals, 2005, 6(2):28-30 .
[2] Gu Li, Huang Jianmin, GULi, & HUANGJian-min. (2000). Rapid determination of zinc dihydrogen phosphate and zinc nitrate in phosphating solution. Materials Protection, 33(11), 27-28.
[3] Liu Shuying. (1998). Introduction to industrial zinc dihydrogen phosphate chemical industry standards. China StoneOil and Chemical Standards and Quality(6), 11-13.
