Sodium nitrophenolate/ATONIK

Sodium nitrophenolate/ATONIK molotus molotuschem

Structure Formula 

NOMENCLATURE

sodium 5-nitroguaiacolate

IUPAC name sodium 2-methoxy-5-nitrophenolate 

Chemical Abstracts name 3-hydroxy-4-methoxynitrobenzene sodium salt 

Other names 5 NG, sodium 5-nitroguaiacolate  CAS RN [67233-85-6] 

sodium o-nitrophenolate

IUPAC name sodium 2-nitrophenolate; sodium o-nitrophenolate 

Chemical Abstracts name sodium o-nitrophenolate 

Other names oNP  CAS RN [824-39-5] 

sodium p-nitrophenolate

IUPAC name sodium 4-nitrophenolate; sodium p-nitrophenolate 

Chemical Abstracts name sodium p-nitrophenolate 

Other names pNP  CAS RN [824-78-2] 

PHYSICAL CHEMISTRY

nitrophenolate mixture

Composition 'Atonik' contains 0.1% sodium 5-nitroguaiacolate, 0.2% sodium o-nitrophenolate and 0.3% sodium p-nitrophenolate. 

sodium 5-nitroguaiacolate

Composition Tech. is ³99.0% pure.  Mol. wt. 191.1  M.f. C7H6NNaO4  Form Red crystalline powder with a musty odour.  M.p. decomposes above 145 °C  V.p. 4.80 ´ 10-9 mPa (25 °C, gas saturation method)  KOW logP = 1.49 (pH 4), 1.62 (pH 7), -0.25 (pH 10)  S.g./density 1.55 (22 °C)  Solubility In water 1.3 (pH 4), 1.8 (pH 7), 86.8 (pH 10) (all g/l). In n-heptane 2.8, o-xylene 29, 1,2-dichloroethane 39, acetone 170, methanol 53000, ethyl acetate 59 (all mg/l).  Stability Stable under dry conditions.  pKa 8.21 (22 °C)  F.p. Highly flammable (Koenen apparatus); explosive (Hammer fall) 

sodium o-nitrophenolate

Composition Tech. is ³98.1% pure.  Mol. wt. 161.1  M.f. C6H4NNaO3  Form Red crystalline powder with a musty odour.  M.p. decomposes above 280 °C  V.p. 3.33 ´ 10-13 mPa (25 °C, gas saturation method)  KOW logP = 1.70 (pH 4), 1.12 (pH 7), -1.03 (pH 10)  S.g./density 1.65 (22 °C)  Solubility In water 0.78 (pH 4), 2.8 (pH 7), 181.6 (pH 10) (all g/l). In n-heptane <0.2, o-xylene <0.28, 1,2-dichloroethane <0.5, acetone 1200, methanol 47000, ethyl acetate 180 (all mg/l).  Stability Stable under dry conditions.  pKa 7.16 (22 °C)  F.p. Highly flammable (Koenen apparatus); explosive (Hammer fall) 

sodium p-nitrophenolate

Composition Forms a dihydrate.  Mol. wt. 161.1  M.f. C6H4NNaO3  Form Bright yellow, fine granules.  M.p. loses water of crystallisation above 94 °C; decomposes above 175 °C  V.p. 2.80 ´ 10-9 mPa (25 °C, gas saturation method)  KOW logP = 1.82 (pH 4), 1.28 (pH 7), -0.93 (pH 10)  S.g./density 1.41 (22 °C)  Solubility In water 14.7 (pH 4), 13.9 (pH 7), 57.4 (pH 10) (all g/l). In n-heptane 0.094, o-xylene 1.0, 1,2-dichloroethane 2.5, acetone 2400, methanol 181000, ethyl acetate 180 (all mg/l).  pKa 7.16  F.p. Highly flammable (Koenen apparatus); explosive (Hammer fall) 

 APPLICATIONS

Biochemistry Stimulates endoauxin activity (regulation of indole-3-acetic acid oxidase) and activity of enzymes involved in mineral metabolism.  Uses Plant growth stimulator which is reported to increase nutrient uptake by cotton, rice, and soya beans, applied at 2 l/ha. Formulation types SL. 

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