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Classification: Fungicide

Other Names: Copper Oxychloride

MF: Cu4Cl2(OH)6

State: Powder

Purity (%): 98%TC, 50%WP

Application: Foliar fungicide with preventative action.

Technical: 98%TC

Formulation: 50%WP

Common name

copper oxychloride (E-ISO, accepted in lieu of common name); oxychlorure de cuivre (F-ISO)

IUPAC name

dicopper chloride trihydroxide (approximate composition); copper oxychloride

Chemical Abstracts name: copper chloride oxide hydrate

CAS RN [1332-40-7]; ([1332-65-6], defined as copper chloride hydroxide)

Formulation types: DP; PA; SC; WG; WP

Molecular formula: Cl2Cu4H6O6

Molecular weight: 427.1

Properties: Green to bluish-green powder.

Toxicity: Oral Acute oral LD50 for rats 700-800 mg/kg. Skin and eye Acute percutaneous LD50 for rats >2000 mg/kg. Inhalation LC50 (4 h) >30 mg/l. Toxicity class WHO (a.i.) III; EPA (formulation) III

Uses: Foliar fungicide with preventative action. Deposits must be on the crop before fungal spores begin to germinate. Control of late blight of potatoes, tomatoes and other vegetables; leaf spot diseases of beet, celery, celeriac, parsley, olives, currants, and gooseberries; downy mildews of vines, hops, spinach, and ornamentals; canker and scab of pome fruit and stone fruit; scab, canker, and melanose of citrus fruit; asparagus rust; peach leaf curl; shot-hole of stone fruit; cane diseases of raspberries and blackberries; leaf spot and leaf scorch of strawberries; anthracnose and blister blight of tea; leaf spot and downy mildew of cucumbers and melons; bacterial diseases of lettuce; etc. Applied at 2-4 kg/ha or 300-400 g/100 l