1,4-Benzoquinone CAS#106-51-4

CAS Number: 106-51-4
Chemical Formula: C6H4O2
Synonyms:

quinone(p-benzoquinone)
1,4-Benzoquine
1,4-Cyclohexadiene dioxide

Appearance: Green Powder

MOQ (Minimum Order Quantity): 1 FCL (Full Container Load)

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تفاصيل المنتج

1,4-Benzoquinone CAS#106-51-4

Quinone (p-benzoquinone) exists as a large yellow, monoclinic prism with an irritating odour resembling that of chlorine. Quinone is extensively used as a chemical intermediate, a polymerisation inhibitor, an oxidising agent, a photographic chemical, a tanning agent, and a chemical reagent. Quinone (p-benzoquinone) was first produced commercially in 1919 and has since been manufactured in several European countries. Its major use is in hydroquinone production, but it is also used as a polymerisation inhibitor and as an intermediate in the production of a variety of substances, including rubber accelerators and oxidising agents. It is used in the dye, textile, chemical, tanning, and cosmetic industries. In chemical synthesis for hydroquinone and other chemicals, quinone is used as an intermediate. It is also used in the manufacturing industries and chemical laboratory associated with protein fibre, photographic film, hydrogen peroxide, and gelatin making. Occupational exposure to quinone may occur in the dye, textile, chemical, tanning, and cosmetic industries. Inhalation exposure to quinone may occur from tobacco smoke.

1,4-Benzoquinone Chemical Properties

Melting point	113-115 °C(lit.)
Boiling point	293°C
bulk density	700kg/m3
density	1.31
vapor density	3.73 (vs air)
vapor pressure	0.1 mm Hg ( 25 °C)
refractive index	n20/D 1.453
Fp	38°C
storage temp.	room temp
solubility	10g/l
pka	7.7
form	Powder
color	Yellow to green
Odor	irritant odor
PH	4 (1g/l, H2O, 20℃)
biological source	synthetic
Water Solubility	10 g/L (25 ºC)
Merck	14,8074
BRN	773967
Exposure limits	TLV-TWA 0.4 mg/m3 (0.1 ppm); STEL 1.2 mg/m3 (0.3 ppm) (ACGIH); IDLH 75 ppm (NIOSH).
Stability:	Stable, but light sensitive. Incompatible with strong oxidizing agents. Flammable.
InChI	1S/C6H4O2/c7-5-1-2-6(8)4-3-5/h1-4H
InChIKey	AZQWKYJCGOJGHM-UHFFFAOYSA-N
SMILES	O=C1C=CC(=O)C=C1
LogP	0.1-0.3 at 23℃ and pH4.8-5.3
CAS DataBase Reference	106-51-4(CAS DataBase Reference)
NIST Chemistry Reference	p-Benzoquinone(106-51-4)
IARC	3 (Vol. 15, Sup 7, 71) 1999
EPA Substance Registry System	Quinone (106-51-4)

Safety Information

Hazard Codes	T,N,Xn,F
Risk Statements	23/25-36/37/38-50-20/21/22-11
Safety Statements	26-28-45-61-28A-23-16
RIDADR	UN 2587 6.1/PG 2
OEB	C
OEL	TWA: 0.4 mg/m3 (0.1 ppm)
WGK Germany	3
RTECS	DK2625000
F	8
Autoignition Temperature	815 °F
TSCA	TSCA listed
HS Code	2914 69 80
HazardClass	6.1
PackingGroup	II
Storage Class	4.1B - Flammable solid hazardous materials
Hazard Classifications	Acute Tox. 3 Inhalation Acute Tox. 3 Oral Aquatic Acute 1 Aquatic Chronic 1 Eye Dam. 1 Flam. Sol. 1 Muta. 2 Skin Corr. 1B Skin Sens. 1 STOT SE 3
Hazardous Substances Data	106-51-4(Hazardous Substances Data)
Toxicity	LD50 orally in rats: 130 mg/kg (Woodard)
IDLA	100 mg/m3

Product Application of 1,4-Benzoquinone CAS#106-51-4

p-Benzoquinone is used as a dienophile in Diels-Alder cycloadditions to prepare naphthoquinones and 1,4-phenanthrenediones. It acts as a dehydrogenation reagent and an oxidizer in synthetic organic chemistry. In the Thiele-Winter reaction, it is involved in the preparation of triacetate of hydroxyquinol by reacting with acetic anhydride and sulfuric acid. It is also used in the synthesis of bromadol and to suppress double- bond migration during olefin metathesis reactions. It is used as a precursor to hydroquinone which finds application in photography and as a reducing agent and an antioxidant in rubber production.

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