Applications: Used in the manufacture of polyimide resins, which are used as raw materials for ...  More ...Applications: Used in the manufacture of polyimide resins, which are used as raw materials for high-temperature resistant electrical insulating varnishes. Also used to produce epoxy resin curing agents and plasticizers, urea-formaldehyde resin stabilizers, phthalocyanine blue dyes, corrosion inhibitors, instant adhesives, and electronic photography toners, etc.
Items
Standard
Appearance
Crystals, no visible
impurities
Color
White or off-white
Content (PMDA), Wt%
99.5min
Trimellitic acid
(TMA), Wt%
0.2max
Trimellitic acid
(EMA), Wt%
Provide data
Melting point, ℃
286.0-287.5
Free acid content，Wt%
0.5max
Oil-insoluble matter，ррm
15max
Color absorbance (in
MeOH)
25.0max
Residual acetone，ррm
Info.(1500max)
Halide ions，ррm
5.0max
Screening >500μm，Wt%
5.0max
>400μm，Wt%
Provide information
>300μm，Wt%
Provide information
>200μm，Wt%
Provide information
>150μm，Wt%
Provide information
>80μm，Wt%
95.0min
Metal ions：Ni, Co, Mn, Sn, Zn, Al,
Si，ррm
1.0max
Cr, K, Na, Cu, Fe, Ca，ррm
2.0max
Total Metals，ррm
20.0max
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Results : Degrease
