sales specifications and physical properties
ptmeg
250
650
1000
1400
1800
2000
3000
appearance
a white waxy solid,and may become transparent liquid over a room temperature
molecular
weight(g/mol)
250±20
650±25
1000±50
1400±50
1800±50
2000±50
3000±50
hydroxyl
number
(mgkoh/g)
416～488
166～180
107～118
77.4～83.1
60.7～64.1
54.7～57.5
36.8～38.0
color
(ahpa,max)
40
40
40
30
30
30
40
water
(wt ppm,max)
200
150
150
150
150
150
150
acid number
(mgkoh/g,max)
0.05
0.05
0.05
0.05
0.05
0.05
0.05
peroxide
(wt ppm,max)
5
5
5
5
5
5
5
stabilizer
(bht,wt.ppm)
220±50
220±50
220±50
220±50
220±50
220±50
220±50
lron
(wt ppm,max)
1
1
1
1
1
1
1
typical physical properties
viscosity
(cps,40℃）
46
203
270
660
1215
1300
1340
specific gravity
(40/4℃)
0.991
0.984
0.981
0.978
0.976
0.974
0.970
melting point
(℃)
-8～-4
23～25
25～26
27～29
29～31
30～32
31～33
flash point
(open cup ,℃)
over 280
over 280
over 280
over 280
over 280
over 280
over 280
solubility
readily soluble in alcohols,esters and ketones,aromaticandchlorinatedhydrocarbons.
insoluble in aliphatic hydrocarbons and water. has a tendency to decrease its solubility as
molecular weight increase.
hygroscopicity
these ptmeg are all hygroscopic.at room temperature,ptmeg can absorb up to 2wt%
water depending on the molecular weight

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广州昊毅化工科技有限公司上海办事处
刘丹
13925052694