Hydroquinone CAS#123-31-9

CAS Number: 123-31-9
Chemical Formula: C6H6O2
Synonyms:

HYDROXYQUINOL
HYDROCHINONE
Melanex

Appearance: White power
HS Code: 2907221000
MOQ (Minimum Order Quantity): 1 FCL (Full Container Load)

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Product Details

Products Description of HydroquinoneCAS#123-31-9

Hydroquinone is also called hydroquinone and 1.4-benzene. Molecular formula C6H6O2. Molecular weight 110.11. Colorless or white crystals. It changes color easily when exposed to light in the air. Its aqueous solution can oxidize to brown in the air, and oxidizes faster in alkaline medium. Melting point 170-171℃, boiling point 285-287℃, relative density 1.33215, UVλmax 288nm in water. It is easily soluble in hot water, ethanol and ether, and slightly soluble in benzene. It has active chemical properties and is easily oxidized. It can also undergo esterification, substitution and other reactions.

Parameters

Melting point	172-175 °C(lit.)
Boiling point	285 °C(lit.)
density	1.32
vapor density	3.81 (vs air)
vapor pressure	1 mm Hg ( 132 °C)
refractive index	1.6320
Fp	165 °C
storage temp.	Store below +30°C.
solubility	H2O: 50 mg/mL, clear
pka	10.35(at 20℃)
form	Needle-Like Crystals or Crystalline Powder
color	White to off-white
Odor	odorless
Water Solubility	70 g/L (20 ºC)
Sensitive	Air & Light Sensitive
Merck	14,4808
BRN	605970
Henry's Law Constant	(x 10-9 atm?m3/mol): <2.07 at 20 °C (approximate - calculated from water solubility and vapor pressure)
Exposure limits	NIOSH REL: 15-min ceiling 2, IDLH 50; OSHA PEL: TWA 2; ACGIH TLV: TWA 2 (adopted).
Stability:	Stable. Combustible. Incompatible with strong oxidizing agents, strong bases, oxygen, ferric salts. Light and air-sensitive. Discolours in air.
InChIKey	QIGBRXMKCJKVMJ-UHFFFAOYSA-N
LogP	0.59 at 20℃
CAS DataBase Reference	123-31-9(CAS DataBase Reference)
NIST Chemistry Reference	Hydroquinone(123-31-9)
IARC	3 (Vol. 15, Sup 7, 71) 1999
EPA Substance Registry System	Hydroquinone (123-31-9)

Safety Information

Hazard Codes	Xn,N
Risk Statements	22-40-41-43-50-68-R68-R50-R43-R41-R40-R22
Safety Statements	26-36/37/39-61-S61-S36/37/39-S26
RIDADR	2662
WGK Germany	3
RTECS	MX3500000
Autoignition Temperature	930 °F
TSCA	Yes
HazardClass	9
PackingGroup	III
HS Code	29072210
Hazardous Substances Data	123-31-9(Hazardous Substances Data)
Toxicity	LD50 orally in rats: 320 mg/kg (Woodard)
IDLA	50 mg/m3

Product Application of HydroquinoneCAS#123-31-9

Colorimetric determination of phosphorus, magnesium, niobium, copper, silicon and arsenic; polarographic and volumetric determination of iridium; reducing agent for heteropolyacids; reducing agent for copper and gold; testing of phosphate, tungstate, nitrate, nitrite, selenium and tellurium; developer; antioxidant; desulfurizer for fertilizer industry; urea synergist.

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