Dithianon

Description

Dithianon · CAS 3347-22-6 · C14H4N2O2S2. UNII 3ESS44NI1F. Melting Point: 220 °C; Melting Point: 225 °C; Solubility: In water, 0.14 mg/L at 20 °C.

Identification

CAS Registry Number	3347-22-6
PubChem CID	18771
Molecular formula	C14H4N2O2S2
IUPAC name	5,10-dioxobenzo[g][1,4]benzodithiine-2,3-dicarbonitrile
UNII (FDA)	3ESS44NI1F

Computed Descriptors

Molecular Weight	296.3
XLogP3	2.8
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	6
Rotatable Bond Count	0
Exact Mass	295.97141972
Monoisotopic Mass	295.97141972
Topological Polar Surface Area	132
Heavy Atom Count	20
Formal Charge	0

Physical & Chemical Properties

Melting Point	220 °C
Melting Point	225 °C
Solubility	In water, 0.14 mg/L at 20 °C
Solubility	0.14 mg/L @ 20 °C (exp)
Density	1.58 g/cu cm at 20 °C
Vapor Pressure	2.03X10-11 mm Hg at 25 °C
LogP	log Kow = 2.84
LogP	2.84
Stability/Shelf Life	Stable up to 80 °C.

Physical description & handling notes

• Brown odorless solid; [Merck Index]
• Solid
• Dark brown crystals, with a coppery luster
• BROWN CRYSTALS
• Odorless
• Ignition temperature >300 °C

GHS Hazard Classification

Reported hazard statements	H302, H400, H410, H317 (59.2%), H318 (59.2%), H330 (59.2%), H351 (59.2%), H361

Documented Uses

• Fungicide against many foliar diseases of pome & stone fruit but not against powdery mildews
• Fungicide ... used as a ... seed dressing.
• Pathogens controlled include Venturia spp (apple, cherry, & pear), Microthyriella rubi (apple), Coccomyces hiemalis & Stigmina carpophila (cherry), Monilia spp, Taphrina deformans & Tranzschelia discolor (apricot & peach), Plasmopara viticola (grape), Pseudoperonospora humuli (hop), Elsinoe fawcetti, & Phomopsis citri (citrus), Mycosphaerella fragrariae, & Diplocarpon earliana (strawberry), Colletotrichum coffeeanum (coffee), Cronartium ribicola, Drepanopeziza ribis, & Plasmopara ribicola (currant).
• Fungicide. Controls scab, downy mildew, rust, and leaf spot in some pome fruit, stone fruit, small fruit, wine growing, ornamentals, citrus, coffee, and vegetables. For use in intergrated pest management programs.
• van Schoor et al, US patent 2,976,296 (1961 to E. Merck).
• Made by the reaction of disodium 2,3-dimercaptomaleonitrile and 1,4-naphthoquinone.

Synonyms

DITHIANON; 3347-22-6; Delan; Dithianone; Thynon; Delan-col; Merkdelan; Delan WP; Stauffer MV-119A; Delan (fungicide); 1,4-Dithiaanthraquinone-2,3-dicarbonitrile; 1,4-Dithiaanthraquinone-2,3-dinitrile; 2,3-Dinitrilo-1,4-dithia-9,10-anthraquinone; MV 119A; 2,3-Dinitrilo-1,4-dithia-anthraquinone; IT 931

Frequently Asked Questions

What are the CAS number and molecular formula of Dithianon?

CAS 3347-22-6; molecular formula C14H4N2O2S2; molecular weight — g/mol.

What other names is Dithianon known by?

DITHIANON, 3347-22-6, Delan, Dithianone, Thynon, Delan-col.

Is Dithianon classified as hazardous?

Hazard statements reported: H302, H400, H410, H317, H318.

What are the key physical properties of Dithianon?

Melting Point: 220 °C; Melting Point: 225 °C; Solubility: In water, 0.14 mg/L at 20 °C; Solubility: 0.14 mg/L @ 20 °C (exp).

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.