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trimethylolpropane TMP Ethyl-2--1,3-propanediol
Cas RN: 77-99-6
Struc. formula: CH3CH2C(CH2OH)3
Mole. weight: 134.17
Hygroscopicity: Strong ability to absorb moisture while exposed to atmosphere
Solubility: Easily soluble in water and acetone, soluble in carbon tetrachloride, chloroform and aether, insoluble in fatty hydrocarbon and aromatic hydrocarbon.
Boiling point: 295°C under normal pressure
Density(ρ20): 1.176g/cm3
Specification:
Items |
Limits |
||
|
Premium Grade |
Superior Grade |
Qualified Grade |
Appearance |
White flakes |
Off white solid |
|
OH-percentage/% min. |
37.5 |
37.5 |
37.0 |
Water Content/% max. |
0.05 |
0.10 |
0.1 |
Acidity(AsHCOOH)/% max. |
0.001 |
0.002 |
0.002 |
Crystallizing Point/°C min. |
59.0 |
58.0 |
58.0 |
Ash Content/% max. |
0.002 |
0.003 |
0.005 |
Colour/(APHA) max. |
15 |
30 |
50 |
Store at low temperatures, preferably below 30℃, to avoid cake formation. Do not exceed 50℃. Stacking pallets during storage could increase the risk of caking.
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