1-amino-4-(methylamino)anthraquinone Property

Melting point:

193°C

Boiling point:

395.45°C (rough estimate)

Density 

1.1562 (rough estimate)

refractive index 

1.5906 (estimate)

storage temp. 

2-8°C

pka

2.71±0.20(Predicted)

Water Solubility 

580.2ug/L(25 ºC)

EPA Substance Registry System

9,10-Anthracenedione, 1-amino-4-(methylamino)- (1220-94-6)

Safety

Toxicity

rat,LD50,intraperitoneal,1gm/kg (1000mg/kg),Gigiena Truda i Professional'nye Zabolevaniya. Labor Hygiene and Occupational Diseases. Vol. 21(12), Pg. 27, 1977.

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

H412Harmful to aquatic life with long lasting effects

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P271Use only outdoors or in a well-ventilated area.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P302+P352IF ON SKIN: wash with plenty of soap and water.

P304+P340IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P312Call a POISON CENTER or doctor/physician if you feel unwell.

P332+P313IF SKIN irritation occurs: Get medical advice/attention.

P337+P313IF eye irritation persists: Get medical advice/attention.

P362Take off contaminated clothing and wash before reuse.

P403+P233Store in a well-ventilated place. Keep container tightly closed.

P405Store locked up.

P501Dispose of contents/container to..…

1-amino-4-(methylamino)anthraquinone Chemical Properties,Usage,Production

Preparation

(a) 1,4-Diamino-2,3-dihydroanthraquinone?in the presence of sulfuric acid in chlorine, with methanol for methylation;

Synthesis

1-Amino-4-methylaminoanthraquinone is prepared from 1,4-diaminoanthraquinone by partial methylation , from 1-amino-4-methylaminoanthraquinone- 2-sulfonic acid by reductive SO3H cleavage , , from 2,3-dihydro- 1,4-dihydroxyanthraquinone by hydroxyl replacement , or from 2,3- dihydro-1,4-diaminoanthraquinone by replacement of NH2 (in admixture with 1,4- bismethylaminoanthraquinone).

Purification Methods

Purify the quinone by TLC on silica gel plates using toluene/acetone (3:1) as eluent. The main band is scraped off and extracted with MeOH. The solvent is evaporated, and the residue is dried in a drying pistol [Land et al. J Chem Soc, Faraday Trans 1 72 2091 1976]. [Beilstein 14 H 198, 14 I 462, 14 III 440, 14 IV 458.]

Properties and Applications

bright blue purple. Soluble in acetone and benzene, slightly soluble in ethanol, insoluble in linseed oil. The strong sulfuric acid for brown, diluted in red. And C.I.Solvent Violet 12 learn the same structure.