510-13-4

Name	SOLVENT GREEN 1
CAS	510-13-4
EINECS(EC#)	208-109-7
Molecular Formula	C23H26N2O
MDL Number	MFCD00151208
Molecular Weight	346.47
MOL File	510-13-4.mol

Synonyms

CI 42000:1 LABOTEST-BB LT00159771 MALACHITE GREEN BASE MALACHITE GREEN CARBINOL BASE SOLVENT GREEN 1 TIMTEC-BB SBB006477 4-(dimethylamino)-alpha-(4-(dimethylamino)phenyl)-alpha-phenyl-benzenemethan alpha,alpha-bis(p-dimethylaminophenyl)-benzylalcoho benzenemethanol,4-(dimethylamino)-alpha-(4-(dimethylamino)phenyl)-alpha-phen benzenemethanol,4-(dimethylamino)-alpha-[4-(dimethylamino)phenyl]-alpha-phen bis(p-(dimethylamino)phenyl)phenyl)-methano bis(p-(dimethylamino)phenyl)phenylmethanol carbinolbasedesmalachitgruen malachitegreencarbinol alpha,alpha-bis(p-dimethylaminophenyl)benzyl alcohol MALACHITE GREEN C.I. NO.42000 Green Base 4-(Dimethylamino)-α-[4-(dimethylamino)phenyl]-α-phenylbenzenemethanol 4,4'-Bis(dimethylamino)trityl alcohol Bis[4-(dimethylamino)phenyl]phenylmethanol

Chemical Properties

Melting point	112-114 °C(lit.)
Boiling point	481.19°C (rough estimate)
density	1.0896 (rough estimate)
refractive index	1.6300 (estimate)
pka	13.78±0.29(Predicted)
CAS DataBase Reference	510-13-4(CAS DataBase Reference)
EPA Substance Registry System	Benzenemethanol, 4-(dimethylamino)-.alpha.-[4-(dimethylamino)phenyl]-.alpha.-phenyl- (510-13-4)

Safety Data

Hazard Codes	Xn
Risk Statements	R22:Harmful if swallowed. less more
WGK Germany	3
RTECS	DN8600000

Hazard Information

Definition

ChEBI: Malachite Green carbinol is a benzenoid aromatic compound.

Properties and Applications

TEST ITEMS	SPECIFICATION
APPEARANCE	Malachite Green Powder
SHADE	Bluish
HEAT RESISTANCE	140 °C min
LIGHT FASTNESS	4
ACID RESISTANCE	4
ALKALI RESISTANCE	4
WATER RESISTANCE	5
DENSITY	1.10g/cm ³
RESIDUE ON 80 MESH	5.0% max
WATER SOLUBLE	1.0% max
VOLATITE 105 °C	1.0% max
TINTING STRENGTH	100-105 %
WEIGHT METAL TOTAL	50ppm max

Purification Methods

The oxalate [Beilstein 8 H 326, 13 IV 2279.] is recrystallised from hot water and dried in air. The carbinol is precipitated from the oxalate (1g) in distilled water (100mL) by adding M NaOH (10mL). The precipitate is filtered off, recrystallised from 95% EtOH containing a little dissolved KOH, then washed with ether, and crystallised from pet ether. Dry it in a vacuum at 40o. An acid, almost colourless, solution (2 x 10-5M in 6 x 10-5M H2SO4) rapidly reverts to the coloured dye. [Swain & Hedberg J Am Chem Soc 72 3373 1950, Beilstein 13 H 243, 744.]

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