2-Chlorophenothiazine

Synonym(s):2-Chlorothiodiphenylamine

CAS NO.：92-39-7
Empirical Formula: C12H8ClNS
Molecular Weight: 233.72
MDL number: MFCD00005016
EINECS: 202-152-5
SAFETY DATA SHEET (SDS)
Update Date: 2026-04-22 18:57:36

What is 2-Chlorophenothiazine?

Chemical properties

GREYISH TO SLIGHTLY GREEN OR BROWNISH POWDER

The Uses of 2-Chlorophenothiazine

2-Chlorophenothiazine may be used as starting reagent for the synthesis of N-(10H-phenothiazin-1-yl) benzene sulphonamide.

The Uses of 2-Chlorophenothiazine

Metabolite of Chloropromazine

General Description

2-Chlorophenothiazine is an methylene blue (MB) derivative. Transient resonance Raman and absorption spectra of the lowest excited triplet states T₁ and the cation radicals of 2-chlorophenothiazine have been investigated. Molecular semiconductors based on the 1:1 charge-transfer complexes of 2-chlorophenothiazine with 2,3-dichloro-5,6-dicyano-p-benzoquinone (DDQ) have been investigated by X-ray powder diffraction.

Synthesis

(1)2-(3-chloro-phenyl-) benzaminic acid is in the presence of the iron of catalytic amount, in 160～180℃ of following depickling reaction generation m-chloro pentanoic that take place;by step (1) gained m-chloro pentanoic in the presence of the iodine of catalytic amount, at 110～150℃ ring-closure reactions taking place down with sulphur makes described 2-chloro phenothiazine.

Properties of 2-Chlorophenothiazine

Melting point:	195-200 °C (lit.)
Boiling point:	395.7±31.0 °C(Predicted)
Density	1.2350 (rough estimate)
refractive index	1.6100 (estimate)
storage temp.	2-8°C
solubility	DMSO (Slightly), Methanol (Slightly, Sonicated)
form	neat
pka	-2.28±0.20(Predicted)
color	Pale Beige to Beige
BRN	176587
CAS DataBase Reference	92-39-7(CAS DataBase Reference)
EPA Substance Registry System	10H-Phenothiazine, 2-chloro- (92-39-7)

Safety information for 2-Chlorophenothiazine

Signal word	Warning
Pictogram(s)	Exclamation Mark Irritant GHS07
GHS Hazard Statements	H317:Sensitisation, Skin
Precautionary Statement Codes	P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P272:Contaminated work clothing should not be allowed out of the workplace. P280:Wear protective gloves/protective clothing/eye protection/face protection. P302+P352:IF ON SKIN: wash with plenty of soap and water. P333+P313:IF SKIN irritation or rash occurs: Get medical advice/attention.