ISOPROPYLTHIOXANTHONE

PRODUCT IDENTIFICATION
CAS NO. 5495-84-1(2-Isomer)
83846-86-0 (4-Isomer)

ISOPROPYLTHIOXANTHONE

EINECS NO. 226-827-9 (2-Isomer)
281-065-4 (4-isomer)
FORMULA C16H14OS
MOL WT. 254.35
H.S. CODE  
TOXICITY  
SYNONYMS

ITX; 2-(1-methylethyl)-9H-Thioxanthen-9-one; 异丙基硫杂蒽醌;

Mixture of 2-Isopropylthioxanthen-9-one and 4-Isopropylthioxanthen-9-one;
SMILES

2-Mercaptobenzoic acid

CLASSIFICATION

 
 

PHYSICAL AND CHEMICAL PROPERTIES
PHYSICAL STATE

slightly yellow crystqlline powder

MELTING POINT 62 - 77 C
BOILING POINT  
SPECIFIC GRAVITY  
SOLUBILITY IN WATER  
AUTOIGNITION  
pH  
VAPOR DENSITY  

REFRACTIVE INDEX

  
NFPA RATINGS  
FLASH POINT

210 C

STABILITY Stable under ordinary conditions

GENERAL DESCRIPTION & APPLICATIONS
Xanthene is a polyaromatic cyclic ether compound which have one oxygen in the ring system.  Two benzene rings are fused to tetrahydropyran which is a six membered cyclic ether with  five carbons and one oxygen. It is soluble alcohol and ether. Pyran ring structure is the basis of the pyranoses. Xanthene is used as a fungicide itself. But the main function is as the fundamental structure of chromophore particularly luminescent dyes.  Xanthene class dyes include fluorenes, pyronins, succineins, sacchareins, rosamines, rhodamines, rhodols and fluorones.  Xanthone is the xanthene ketone. It is used as an ovicide and as a larvicide. Thioxanthone is the sulfur analogue of xanthone. An sulfur atom exists on the ring system instead of an oxygen atom. Xanthene structure provides characteristic property of spectroscopic photodynamic activity. Its derivatives are widely used in biological stains, light and temperature sensitizers, photoinitiator of polymerization process, histotechnologies, photochromic and thermochromic agents and laser dyes as well as in molecular chemistry and organometallic-complexes.

Polymerization is initiated generally by free radical. There are four types of free radical initiators which initiate polymerization.

  • Peroxides including hydroperoxides (tertiary-butyl hydroperoxide, benzoylperoxide)
  • Azocompound thermal initiators (azoisobutyronitrile)
  • Redoxinitiators (mixture of iron(III) acetylacetonate): free radicals are formed by one-electron transferreactions. Useful in low temperature and emulsion polymerization
  • Photoinitiators (benzoin, benzil dimethylketal)

The main advantage of polymerization started by photoinitiators is temperature-independence and easy control. It can be conducted at very low temperatures and can be stopped simply by removing the light source. Photoinitiators are compounds that break down into free radicals upon exposure to ultraviolet radiation. Photoinitiators undergo a unimolecular bond cleavage upon irradiation to yield free radicals (benzoin esters; benzil ketals; alpha-dialkoxy acetophenones; alpha-hydroxy-alkylphenones; alpha-amino alkyl- phosphine; acylphosphine oxides). Another type of photoinitiators undergo a bimolecular reaction where the excited state of the photoinitiator interacts with a second molecule (a coinitiator) to generate free radicals(benzo phenones,amines; thioxanthones,amines; titanocenes). Photoinitiators are widely applied in UV curing inks, wood coatings, paper coatings, optical fiber, PCB, screen printing , paper varnish and other surface coatings.
SALES SPECIFICATION

APPEARANCE

slightly yellow crystalline powder

ASSAY

95.0% min

MELTING POINT 60 - 77 C

LOSS ON DRYING

0.5% max

COLOR, GARDNER

5 max (1% Sol. in toluene)

ISOMER RATIO

85 : 15 (Typical)

TRANSPORTATION
PACKING  
HAZARD CLASS  
UN NO.  
OTHER INFORMATION
  • Thioxanthone [ CAS RN: 492-22-8]
  • 2-(Trifluoromethyl)-9H-thioxanthen-9-one [CAS RN: 1693-28-3]
  • 2-Isopropylthioxanthone [CAS RN: 5495-84-1]
  • 2-Methylthiaxanthone [CAS RN: 15774-82-0]
  • 3-Methoxy-4-(dimethylaminomethyl)thioxanthone hydrochloride [CAS RN: 29483-51-0]
  • 3-Methoxy-4-(diethylaminomethyl)thioxanthone hydrochloride [CAS RN: 29483-53-2]
  • 3-Methoxy-4-piperidinomethylthioxanthone hydrochloride [CAS RN: 29483-55-4]
  • 3-Methoxy-4-morpholinomethylthioxanthone hydrochloride [CAS RN: 29529-45-1]
  • 3-Hydroxy-4-(dimethylaminomethyl)-9-thioxanthenone hydrochloride [CAS RN: 29529-47-3]
  • 3-Hydroxy-4-(diethylaminomethyl)-9-thioxanthenone hydrochloride [CAS RN: 29529-49-5]
  • 3-Hydroxy-4-piperidinomethyl-9-thioxanthenone hydrochloride [CAS RN: 29529-51-9]
  • 2-(2-(Dimethylamino)ethoxy)thioxanthen-9-one hydrochloride [CAS RN: 31696-71-6]
  • 2-(3-Dimethylaminopropoxy)thioxanthone hydrochloride monohydrate [CAS RN: 31696-73-8]
  • 2-(2-(Diethylamino)ethoxy)thioxanthen-9-one hydrochloride [CAS RN: 31771-67-2]
  • 4-(beta-Diethylaminoethylamino)-1,2-cyclohexenothiaxanthone [CAS RN: 34667-48-6]
  • 3-Carboxythioxanthone-10,10-dioxide [CAS RN: 51762-52-8]
  • 7-Methylthioxanthone-2-carboxylic acid [CAS RN: 51907-72-3]
  • 4-(Bis(2'-chloroethyl)amino)propylamino-1,2-cyclohexenothioxanthone [CAS RN: 53926-38-8]
  • 4-Isopropyl-9-thioxanthone [CAS RN: 83846-86-0]
  • 4-(3-(Methylamino)propoxy)-9H-thioxanthen-9-one hydrochloride [CAS RN: 118794-01-7]
  • 4-(4-(Methylamino)butoxy)-9H-thioxanthen-9-one hydrochloride [CAS RN: 118825-64-2]