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Phenylhydrazine CAS#100-63-0

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Chemical Name：Phenylhydrazine

CAS No.:100-63-0

Molecular Formula：C6H8N2

Molecular weight:108.14

Sample: Available

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Product Details

Products Description of Phenylhydrazine CAS#100-63-0

Phenylhydrazine, also known as hydrazine, was first synthesized by German organic chemist Hermann Emil Fischer in 1875 and is the first synthesized hydrazine derivative. It is a light yellow crystal or oily liquid at room temperature and a monoclinic prism crystal at low temperature. It is easily oxidized in the air and becomes dark brown or dark red. It is one of the derivatives of hydrazine, often abbreviated as PhNHNH2. It is slightly soluble in water and alkaline solution, and soluble in dilute acid. It is miscible with ethanol, ether, chloroform and benzene.

The common preparation method is to generate diazonium salt by reacting aniline with sodium nitrite under the action of hydrochloric acid, and then reduce it with sodium sulfite/sodium hydroxide. Phenylhydrazine hydrochloride is generated by acid precipitation, and phenylhydrazine is obtained after neutralization. It is used to make dyes, drugs, developers, etc. It is also an important reagent for identifying carbonyl groups, used to identify aldehydes, ketones and sugars. It reacts with benzaldehyde to form phenylhydrazone, and the hydrazone formed by phenylhydrazine or 2,4-dinitrophenylhydrazine is used to identify aldehydes and ketones. It reacts with aldehydes and ketones in the Fischer indole synthesis (discovered by Hermann Emil Fischer in 1883. The reaction is to use phenylhydrazine and aldehydes and ketones to heat and rearrange under acid catalysis to eliminate a molecule of ammonia to obtain 2- or 3-substituted indoles.) to obtain indole ring compounds.

Phenylhydrazine Chemical Properties

Melting point	18-21 °C (lit.)
Boiling point	238-241 °C (lit.)
density	1.098 g/mL at 25 °C (lit.)
vapor density	4.3 (vs air)
vapor pressure	<0.1 mm Hg ( 20 °C)
refractive index	n20/D 1.607(lit.)
Fp	192 °F
storage temp.	Store below +30°C.
solubility	Soluble in dilute acids.
form	Powder
pka	8.79(at 15℃)
color	White to slightly blue or light beige
explosive limit	1.1%(V)
Water Solubility	145 g/L (20 ºC)
Sensitive	Air & Light Sensitive
Merck	14,7293
BRN	606080
Exposure limits	TLV-TWA skin 0.1 ppm (0.44 mg/m3) (ACGIH), 5 ppm (22 mg/m3) (OSHA); STEL 10 ppm (44 mg/m3) (OSHA); carcinogenicity: A2-Suspected Human Carcinogen (ACGIH), Carcinogen (NIOSH). .
Dielectric constant	7.2（23℃）
Stability:	Stable, but may decompose in sunlight. May be air or light sensitive. Incompatible with strong oxidizing agents, metal oxides.
CAS DataBase Reference	100-63-0(CAS DataBase Reference)
NIST Chemistry Reference	Hydrazine, phenyl-(100-63-0)
EPA Substance Registry System	Phenylhydrazine (100-63-0)

Safety Information

Hazard Codes	T,N
Risk Statements	45-23/24/25-36/38-43-48/23/24/25-50-68
Safety Statements	53-45-61
RIDADR	UN 2572 6.1/PG 2
WGK Germany	3
RTECS	MV8925000
F	8-10-23
Autoignition Temperature	345 °F
TSCA	Yes
HS Code	2928 00 90
HazardClass	6.1
PackingGroup	II
Hazardous Substances Data	100-63-0(Hazardous Substances Data)
Toxicity	LD50 orally in Rabbit: 188 mg/kg
IDLA	15 ppm

Product Application of Phenylhydrazine CAS#100-63-0

Phenylhydrazine is used in the production of pesticides to synthesize the intermediate 1-phenylaminourea of the organophosphorus insecticide triazophos and the intermediate 1-phenyl-3,6-dihydroxypyridazine of pyridazinon. It is also the intermediate of the new fungicide faChemicalbookmoxadone and fenamidone. In addition, as an organic synthesis raw material, phenylhydrazine is also used as an intermediate in the dye, pharmaceutical and other industries, and is also used as an analytical reagent.

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