DNOC

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Chemical Identification | General Product Information | Physical & Safety Data

Chemical Identification

Common Name

DNOC

中文通用名

二硝酚

IUPAC

4,6-dinitro-o-cresol

CAS

2-methyl-4,6-dinitrophenol

CAS No.

534-52-1

Molecular Formula

C₇H₆N₂O₅

Molecular Structure

General Product Information

Category

Insecticides > Dinitrophenol insecticides
Herbicides > Dinitrophenol herbicides
Acaricides / Miticides > Dinitrophenol acaricides
Fungicides > Dinitrophenol fungicides

Activity

Insecticide, acaricide, fungicide, herbicide

Premix

Flakes, flowable, wettable powder. Premix Parters: chlorpyrifos; lambda-cyhalothrin; cypermethrin; deltamethrin; dimethoate; methomyl; methyl parathion.

Physical & Safety Data

Physical Properties

Molecular weight:198.1. Physical form:Yellow crystals (pure DNOC, but not tech., is explosive when dry). Density:1.58 (20 °C); Composition:Tech. is 95-98% pure. Melting point:88.2-89.9 °C; ( tech., 83-85 °C); Vapour pressure:16 mPa (25 °C); Henry constant:2.41×10-7 Pa m3 mol-1 ( calc.); Partition coefficient(n-octanol and water):logP = 0.08 ( pH 7); pKa:4.48 (20 °C); Solubility:In water 6.94 g/l (20 °C, pH 7). In toluene 251, methanol 58.4, hexane 4.03, ethyl acetate 338, acetone 514, dichloromethane 503 (all in g/l, 20 °C). The sodium, potassium, calcium, and ammonium salts are readily soluble in water.; Stability:In water, DNOC degrades very slowly, DT50 >1 y. Photolysis DT50 c. 253 h (20 °C). Soluble in most organic solvents.

Toxicology

Oral:Acute oral LD₅₀ for rats 25-40 mg/kg, mice 16-47 mg/kg, goats 100 mg/kg, cats 50 mg/kg; for sheep 200 mg DNOC-sodium/ kg. Percutaneous:Acute percutaneous LD₅₀ for rats 200-600, rabbits 1000, mice 187 mg/kg. Skin irritant. Dangerous amounts can be absorbed through the skin. Phytotoxicity:Very phytotoxic. ADI:( EPA) 0.002 mg/kg.

Environmental Profile

Ecotoxicology:
Algae: LC₅₀ (96 h) 6 mg/l.Bees: LD₅₀ 1.79-2.29 mg/bee; moderate to low toxicity under field conditions.Birds: LD₅₀ for Japanese quail 15.7 mg/kg (14 d), ducks 23, partridges 20-25, pheasants 6-85 mg/kg. LC₅₀ for Japanese quail 637 mg/kg. Daphnia: LC₅₀ (24 h) 5.7 mg/l.Fish: LC₅₀ for carp 6-13, trout 0.45, bluegill sunfish 0.95 mg/l.Worms: LC₅₀ (14 d) for earthworms 15 mg/kg soil.
Environmental fate:
Animals:In mammals, following oral administration, DNOC undergoes metabolism, and is eliminated as the glucuronide conjugate and as 2-methyl-4,6-diaminophenol. 50 in humans c. 150 h ( est., Jastroch DT₅₀ in soil 0.1-12 d (20 °C), 15 d (5 °C). In water, DT₅₀ 3-5 w (20 °C).Plant:In plants, the nitro groups are reduced to amino groups.
WATER SOLUBILITY: 0.013% at 15°C.

Transport Information

Signal Word:DANGER; Hazard Class:Ib (Highly hazardous)