Phosphate chemicals protect metals from corrosion and increase its resistance to wear for further application. The phosphate coating is an ideal base for subsequent painting, liquid paints, powder coating, oil coating , rubber coating and cold forming.
There are three major reasons for phosphating benefiting your process.
Form a stable inert coating on the metal surface
Provide excellent paint adhesion
Inhibit the spread of corrosion from damaged area.
Supplier: All types of petro chemicals, mineral metals & scraps, food & edible oils, agro chemical, minerals/metals, urea fertilizer, jet fuel, d2 diesel oi, dap, industrial bitumen, crude oil, metal nuggets Services: Intermediary Buyer: All types of petro chemicals, mineral metals & scraps, food & edible oils, agro chemical
Mono Aluminium Dihydrogen Phosphate(MAPP) :
1.Properties:
Aluminium dihydrogen phosphate is a type of colorless and odorless but extremely sticky liquid, freely soluble in water and solidifiable at normal room temperature.It has strong binding force in liquid or solid states and good resistance to peeling, high temperature, vibration and hi-temp air stream in addition to good infrared absorbability and insulativity.
2. Product application
It is mainly used as binder and curing agent in the production of hi-temp refractory materials for kiln, spray paint, Fire clay, casting and foundry industry. It is a type of colorless and odorless but extremely sticky liquid, freely soluble in water and solidifiable at normal room temperature
3.Aluminium dihydrogen phosphate chemical examination report
Item Standard
Appearance Colorless Liquid White Powder
P2O5 % 33±1 66±2
Al2O3 8±0.5 16±1
Iron oxide (Fe2O3)% 0.02 0.02
pH value 1.4~2.6 1.4~2.6
4.Product packaging:
Moisture-proof outer packing for polypropylene woven bags: 20kg/ bag, 25kg/ bag, 1000kg/ bag, net weight and design can be customized.
5.Transport and storge:
Protect against weathering. Store in a dry place and avoid extreme fluctuations in temperature. Special conditions for opened packaging: Close bags after use to prevent the absorption of moisture and contamination.
CAS :2809-21-4
Molecular Formula:C2H8O7P2
Molecular weight: 206.02
1, Properties
HEDP is an organophosphoric acid corrosion inhibitor. It can chelate with Fe, Cu, and Zn etc. metal ions and form stable complex compound. It can dissolve the oxidized materials on these metals'surfaces. Under250OC HEDP shows excellent scale and corrosion inhibition ability. HEDP has good chemical stability under high pH value, hard to be hydrolyzed, and hard to be decomposed under ordinary light and heat conditions. Its acid/alkali and chlorine oxidation tolerance are better than that of other organophosphoric acids (salt). HEDP can react with metal ions in water system to form hexa-element chelating complex, with calcium ion in particular. Therefore, HEDP has good antiscale and visible threshold effects. When built together with other water treatment chemicals, it shows good synergistic effects.
The solid of HEDP is high purity product, suitable for using in winter and freezing districts. it is quite suitable for using as cleaning agent in electronic fields and as additives in daily chemicals.
2, Specification:
ITEMS
Index
Appearance
Colorless or light yellow transparent liquid
White crystal powder
Active content (as HEDP) % ¡Ý
50.060.0
89.0
Phosphorous acid (as PO33-)%¡Ü
2.02.0
0.80
Phosphoric acid(asPO43- )% ¡Ü
0.80.8
0.50
Chloride (as Cl-)% ¡Ü
1.01.0
0.10
pH (1% solution) ¡Ü
22
2.0
Density(20OC)g/cm3 ¡Ý
1.341.40
¡ª¡ª
Fe ion ppm ¡Ü
10 10
5.0.
3,HEDP Application range&using method
HEDP is widely used in the in circulating cool water system of electric power, chemical industry, metallurgy, fertilizer, etc. and widely used as a scale and corrosion inhibitor of low-pressure boilers, field waterflood, oil pipeline.
In light&textile industry, HEDP is used as detergent for metal and nonmetal. In dyeing industry, HEDP is used as peroxide stabilizer and dye-fixing agent; In non-cyanide electroplating, HEDP is used as chelating agent. The dosage of 1-10mg/L is preferred as scale inhibitor, 10-50mg/L as corrosion inhibitor, and 1000-2000mg/L as detergent. Usually, HEDP is used together with polycarboxylic acid.
4,Safety Protection:HEDP is Acidity, Avoid contact with eye and skin, once contacted, flush with water.
Package and Storage:ATMP liquid: Normally In 30kg or 250kg net Plastic Drum;ATMP solid: 25kg inner liner polyethylene (PE) bag, outer plastic woven bag, or confirmed by clients request.Storage for ten months in room shady and dry place.
