N-Phenylhydroxylamine

그림문자(GHS)

• 그림문자(GHS)

  

• 신호 어

  Danger

• 유해·위험 문구

  H301：삼키면 유독함

• 예방조치문구

  P301+P310：삼켰다면 즉시 의료기관(의사)의 진찰을 받으시오.

N-Phenylhydroxylamine 화학적 특성, 용도, 생산

• 화학적 성질

  tan powder or crystals

• 용도

  Manufacture of cupferron.

• 제조 방법

  To a dispersion of 180 gm (2.75 gm-atom) of zinc dust in 500 ml of 50% aqueous ethanol, with vigorous stirring, is added 130 ml (156 gm, 1.27 mole) of nitrobenzene. The reaction is initiated by the dropwise addition of an aqueous ammonium chloride solution and can thereafter be maintained at a controllable rate by the cautious addition of the remaining ammonium chloride solution. The reaction temperature rises during this reduction step. Once reflux has subsided, the basic zinc salts are filtered off using a sintered glass funnel. The light green filtrate is cooled in an ice-salt mixture to precipitate the product. The yield is 100 gm (72.2%), m.p. 81°C.
  The reduction of 2-methyl-2-nitropropane is carried out in a similar manner at 10-20°C to afford a 68% yield of N-t-butylhydroxylamine (m.p. 60-62°C).
  

• 일반 설명

  Tan to brown crystals.

• 공기와 물의 반응

  Soluble in hot water.

• 반응 프로필

  N-Phenylhydroxylamine neutralizes acids in exothermic reactions to form salts plus water. May be incompatible with isocyanates, halogenated organics, peroxides, phenols (acidic), epoxides, anhydrides, and acid halides. Flammable gaseous hydrogen may be generated in combination with strong reducing agents, such as hydrides.

• 화재위험

  Flash point data for N-Phenylhydroxylamine are not available but N-Phenylhydroxylamine is probably nonflammable.

• Safety Profile

  Poison by ingestion and subcutaneous routes. Human systemic effects by skin contact: primary irritation. Preparative hazard. Mutation data reported. When heated to decomposition it emits toxic fumes of NOx.

• Purification Methods

  Impure base deteriorates rapidly. Crystallise it from H2O, *C6H6 or *C6H6/pet ether (40-60o). The picrate has m 186o (from EtOH), and the benzenesulfonate salt has m 70o (dec )(EtOH/*C6H6). [Beilstein 15 H 2, 15 I 3, 15, II 4, 15 III 5. 15 IV 4.]

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