Items

Unit

Specifications

1

Color, APHA

-

≦ 20

2

Specific gravity(25℃)

-

1.027 ~ 1.030

3

Water

%

≦ 0.05

4

Purity

%

≧ 99.9

5

Distillation range (198-203℃, vol%)

-

≧ 95

6

Reflective index

-

1.465 ~ 1.470

7

pH

-

7 ~ 8

8

Fe

ppb

≦ 50

9

Ni

ppb

≦ 50

10

Cu

ppb

≦ 30

11

Al

ppb

≦ 100

12

Cr

ppb

≦ 30

13

Pb

ppb

≦ 100

14

Zn

ppb

≦ 100

15

Ca

ppb

≦ 50

16

Ma

ppb

≦ 30

17

Na

ppb

≦ 30

18

K

ppb

≦ 30

19

NMP substituted by methyl group at carbon atom

ppm

≦ 100