О-фенилфенат натрия

Description

Sodium O-phenylphenate (SOPP) is the sodium salt of 2-phenylphenol, a phenolic fungicide. The commercial form is a flaky beige solid. The salt dissolves well in water and produces a highly alkaline solution: the pH of a saturated solution is 12.0–13.5. When the working solution is acidified, the salt passes back into o-phenylphenol - it is free phenol that is the active principle that penetrates the cell membranes of fungi. Adjusting the pH of the treatment bath therefore directly determines both the effectiveness and the risk of damage to the fruit being treated.

Identification

• CAS No.: 132-27-4
• Formula on the card: C12H10O,Na
• English name: Sodium o-phenylphenate
• EU number: 205-055-6
• RTECS number: DV7750000
• HS code: 2907199090
• Catalog section: fungicides
• Synonyms: sodium 2-phenylphenate, sodium o-phenylphenoxide, sodium salt of 2-phenylphenol, sodium 2-hydroxydiphenyl, sodium orthophenylphenol, SOPP
• Trade names: Dovicid A (Dovicid A flakes), Preventol ON, Preventol extra, Natrifen, Stopmold B, Topan, Deccozol, Mystox WFA, Bactolysis 74880, Microban P2, Microban P2 additive

Basic Attributes

• Molecular Weight: 192.189
• Exact weight: 192.055
• PSA Specifications: 23.06
• XLogP3: 3.4974
• Appearance: flaky beige solid
• pH of saturated aqueous solution: 12.0–13.5 (NTP, 1992)
• Density: 1.213 g/cm³
• Melting point: 282 °C
• Boiling point: 282 °C at 760 mm Hg. Art.
• Solubility in water: 100 mg/ml or greater at 20 °C (68 °F) (NTP, 1992)

Mechanism of action and spectrum

The active principle is o-phenylphenol, a contact fungicide of non-specific action. As a substituted phenol, it disrupts the integrity and permeability of the cell membranes of the fungus and denatures proteins, which is why the pathogen does not develop resistance according to the type of target mutation characteristic of systemic drugs. The spectrum is wide: the drug is used against pathogens of post-harvest rot of citrus fruits, primarily green and blue mold of the genus Penicillium, as well as sour rot. Treatment is carried out on the product preparation line - in a washing bath, foam applicator or as part of a coating wax.

Scope of application

• post-harvest treatment of citrus and pome fruits against mold rot during storage and transportation
• sanitary cleaning compositions for commercial fruit processing lines
• preservative-biocide for industrial materials: adhesives, latexes, cutting fluids, leather, textiles
• disinfectants for equipment and premises
• antimicrobial additive for polymer and paint compositions

Stability and Compatibility

The product is stable under normal conditions. Flammable Incompatible with strong oxidizing agents.

Safety Information

• Hazard Statements: H302 - Harmful if swallowed
• Precautionary Statements: P201, P202, P260, P261, P264, P270, P271, P273, P280, P281, P301+P312, P301+P330+P331, P303+P361+P353, P304+P340, P305+P351+P338, P308+P313, P310, P312, P321, P330, P363, P391, P403+P233, P405, P501
• Hazard class code: R22 - harmful if swallowed
• Safety instructions: 22-26-61
• Tags: Xn (harmful), N (dangerous for the environment)
• WGK Germany: 2

The presence in the list of measures P273 (prevent release into the environment) and P391 (collect spills) together with label N emphasizes the environmental component of the risk: waste from treatment baths should not be directed into water bodies without treatment. The highly alkaline reaction of concentrated solutions requires eye and skin protection, regardless of the fact that the product is classified only as H302 for acute toxicity.

Transportation

• Transport codes: UN 3077, class 9, packing group III - environmentally hazardous substance, solid
• Hazard category according to the card: 8; packaging level III

Storage and handling

Store in a cool, dry, dark place in a tightly closed container or cylinder, away from incompatible materials and flammable substances. When preparing working solutions, use gloves, safety glasses and an apron; work with ventilation. Remains of the drug and rinsing water should be transferred for neutralization; do not drain into the sewer.