Product standards and uses of phenylthiourea

Phenylthiourea (phenylthiourea) phenylthio also known as carbamide, N- phenylthiourea, of formula C _.
7 H _.
8 N ₂ S, molecular weight of 152.
21, the formula

1.
Product performance

White needle-like crystals; melting point 154℃, easily soluble in ethanol , soluble in 400 parts of cold water and 17 parts of hot water; slightly bitter taste; toxic
.

2.
Production principle

Aniline is obtained by first forming a salt with sulfuric acid and then performing an addition reaction with sodium thiocyanate
.

3.
Process flow

4.
Technical formula (kg/t)

5.

Glass-lined reaction pot, high tank, suction filter, drying oven
.

6.
Production process

First, 1600 kg of anhydrous chloroform was added to the glass-lined reactor, and 240 kg of aniline was added with stirring
.

7.
Product Standard

8.
Product use

Used in the synthesis of dye intermediates 2-aminobenzothiazole, 3-methylbenzothiazole urea, etc.
; also used in the determination of copper, gold, mercury, palladium, platinum, silver, etc.
, for quantitative analysis of elements (N, S) Standard sample
.

9.
Safety measures

(1) The raw material aniline is highly toxic, and the solvent chloroform is toxic
.

Strong (2) the toxicity of this product, oral rat the LD ₅₀ 3mgkg
.

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