Product standards and uses of m-chloroaniline

7.
Product Standard

8.
Quality inspection

1) Assay

Accurately weigh about 2g of the sample (accurately to 0.
0001g) and place it in a 500mL beaker with a density of 1.
19g/cm ³ concentrated hydrochloric acid and 40mL.
After mixing thoroughly, add 300mL of distilled water, heat to complete dissolution, and add 10% KBr solution after cooling.
20mL
.

The content of amino compound converted into meta-chloroaniline is

In the formula: V—— The volume of NaNO ₂ consumed by the sample , mL;

V ₁ ——The volume of NaNO ₂ consumed in the blank experiment , mL;

c—— The molar concentration of NaNO ₂ standard solution for titration , mol/L;

G——The mass of the sample, g
.

2) Determination of boiling range distillate

Atmospheric distillation is used to collect the distillate at 226～231℃, and the distilled amount (volume fraction) should be greater than 95%
.

9.

Important organic chemical raw materials, widely used in dye, pesticide and pharmaceutical synthesis industries
.

10.
Security measures

(1) The m-chloronitrobenzene used in production is toxic
.

(2) Packed in iron drums, protected from light, sealed and stored in a cool place
.