2,3-QUINOXALINEDITHIOL Property

Melting point:

345°C

Boiling point:

333.6±25.0 °C(Predicted)

Density 

1.3190 (rough estimate)

refractive index 

1.6000 (estimate)

pka

8.22±0.20(Predicted)

EPA Substance Registry System

2,3-Quinoxalinedithione, 1,4-dihydro- (1199-03-7)

Safety

Toxicity

LD50 intraperitoneal in mouse: 100mg/kg

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Danger

Hazard statements

H302Harmful if swallowed

H312Harmful in contact with skin

H315Causes skin irritation

H318Causes serious eye damage

H332Harmful if inhaled

H335May cause respiratory irritation

Precautionary statements

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

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P270Do not eat, drink or smoke when using this product.

P271Use only outdoors or in a well-ventilated area.

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

P301+P312IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.

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.

P310Immediately call a POISON CENTER or doctor/physician.

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

P321Specific treatment (see … on this label).

P322Specific measures (see …on this label).

P330Rinse mouth.

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

P362Take off contaminated clothing and wash before reuse.

P363Wash contaminated clothing before reuse.

P501Dispose of contents/container to..…

2,3-QUINOXALINEDITHIOL Chemical Properties,Usage,Production

Purification Methods

Purify the dithiol by repeated dissolution in alkali and re-precipitation by acetic acid. It complexes with Ag+, Cd2+ , Pb2+ , Bi3+ and Ni2+ in aqueous NH3. [Beilstein 24 III/IV 1428.]