Properties: Nonvolatile white powder with very fine crystal, insoluble in water, density 2.6-3.0g/cm³ , nontoxic, nonirritant on skin, thermal stable.

Uses:Widely used in many kinds of primers, or minged paint of primer and top-coat. It can be employed in phenol resin, alkyd resin, epoxy resin, acrylic resin and other oil soluble resins or water soluble air drying or boking resin to produce paints with high anticorrosive performance, acid resistance, water-resistance and fire-resistance. 

Modified Aluminum Tripolyphosphate Senes Pigments:APW-I and APW-2 have approximately same properties. Normally APW-I is used in oil paint, and APW-2 is used in water soluble paints. APZ-99 is used in oil paint and is used in water soluble paint too.

ITEM

ATP

APW-1

APW-2

APZ-99

P₂O₅ %

64-68

42.5-46.5

35.0-40.0

>60

>60

Al₂O₃ %

13-17

11.0-15.0

9.5-13.5

>12

>12

SiO₂ %

--

13.5-17.0

11.5-15.5

--

--

ZnO %

--

15.0-18.0

26.0-30.0

>8

>8

Density (g/cm³)

--

2.0-3.0

2.0-3.0

2-3

2-3

Mater Soluble In Water %

<1.0

<1.0

<1.0

<1.0

<1.0

Oil absorption (g / 100 g sample)

--

35+10

35+10

35+10

35+10

Particle Size (Screenings of 45 m sieve) %

<0.5

<0.5

<0.5

<0.3

<0.15

pH of water extraction solution

2.5-3.5

5.5-7

5.5-7

4-6

4-6

Moisture (and other Volatile Matter) %

<3.0

<3.0

<3.0

<3.0

<1.5

Whiteness

--

--

--

>90

>90