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Diquat

Diquat structure

CAS No:
2764-72-9
Formula:
C12H12N2
Chemical Name:
Diquat
Synonyms:
Dipyrido[1,2-a:2′,1′-c]pyrazinediium,6,7-dihydro-;Dipyrido[1,2-a:2′,1′-c]pyrazidiinium,6,7-dihydro-;6,7-Dihydrodipyrido[1,2-a:2′,1′-c]pyrazinediium;9,10-Dihydro-8a,10a-diazoniaphenanthrene;Diquat;1,1′-Ethylene-2,2′-bipyridinium;2,2′-Bipyridinium,1,1′-(1,2-ethanediyl)-;Diquat dication;67994-93-8
Categories:
Agrochemicals > Herbicides

Description

ChEBI: The organic cation formed formally by addition of an ethylene bridge between the nitrogen atoms of 2,2'-bipyridine. Most often available as the dibromide.

Diquat Basic Attributes

Molecular Weight：

184.23700

Exact Mass：

184.10000

EC Number：

220-433-0

HScode：

2933990090

Characteristics

PSA：

7.76000

XLogP3：

0.94220

Appearance：

Diquat is a yellow crystalline solid dissolved in a liquid carrier. It is a water emulsifiable liquid. The primary hazard is the threat to the environment. Immediate steps should be taken to limit its spread to the environment. Since it is a liquid it can easily penetrate the soil and contaminate groundwater and nearby streams. It can cause illness by inhalation, skin absorption and/or ingestion. It is used as a herbicide.

Density：

1.22-1.27

Melting Point：

<608°F (decomposes)

Water Solubility：

In water, 708,000 mg/l @ 20 deg C

Storage Conditions：

IT IS GENERALLY NOT ADVISABLE TO STORE UNDILUTED DIQUAT IN CONTACT WITH METALS; UNDILUTED MATERIAL IS BEST KEPT IN ORIGINAL CONTAINER.

Vapor Pressure：

<0.000010 mmHg

Explosive limit：

Diquat cylinder may explode in heat of fire.

Safety Information

Transport codes：

2781

Stability/Shelf Life：

Stable in neutral & acidic solns, but readily hydrolysed in alkaline solns. DT50 at pH 7 in simulated sunlight /about/ 74 days. Photochemically decomposed by UV irradiation.