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1,4-Dioxane CAS#123-91-1

CAS Number:123-91-1
Chemical Formula: C4H8O2
Synonyms:

Ethyleneether

Ethylene glycol ethylene ether
Ethyeneglycol

Appearance: Transperant Liquid

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

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Product Details

1,4-Dioxane CAS#123-91-1

1,4-Dioxane is a hexahydroxy heterocyclic compound containing two oxygen heteroatoms. molecular formula C4H8O2，a colorless, flammable liquid, slight ether smell, photosensitive. Its Vapor can easily form explosive peroxides by absorbing oxygen in the air. Explosion limit 1.97%-1.97% (volume), It should be disposed by reducing agent in distillation process. Melting point 11.8 ℃, boiling point of 101 ℃ (750 mmHg), density 1.0337 (20/4 ℃), refractive index 1.4224, flash point12℃. Soluble in water, ethanol, ether and other organic solvents. It can form azeotrope with water (water content 18.6%) and the boiling point is 87.8 ℃. It turns bright yellow when reacting with tetranitromethane. Trace amount of 2,6-Di-tert-butyl-4-methylphenol(BHT) is often added to the commodity as a stabilizer. Low toxicity, half lethal dose (rats, oral) 4200 mg/kg. A possible carcinogen, an irritating chemical. 1,4-Dioxane can be prepared by dehydration of ethylene glycol by sulfuric acid and it is the indirect product in the production of epoxy ethane. As a good organic solvent, it has a wide application such as the solvent for cellulose acetate and lots of resins. It Is mainly used in the pharmaceutical industry as extraction agent, as a stabilizer in the production of 1,1,1 – trichloroethane as a volatile solvent in the production of polyurethane in place of dimethylformamide and tetrahydrofuran, as stripping agent in the crafts of coating and painting, as a solvent and dispersant in the dye industry, as a stabilizer in printing ink, and also as treatment agent for metal surface. In addition , it can also be used in cosmetics, spices manufacture, electroplating, etc.

1,4-Dioxane Chemical Properties

Melting point	12 °C
Boiling point	101 °C
density	1.034 g/mL at 25 °C(lit.)
vapor density	3 (vs air)
vapor pressure	27 mm Hg ( 20 °C)
refractive index	n20/D 1.422(lit.)
Fp	54 °F
storage temp.	room temp
solubility	Soluble in acetone, alcohol, benzene, and ether (Weast, 1986). Miscible with most organic solvents (Huntress and Mulliken, 1941) including 2-methylpropanol, toluene, cychexanone, and cyclopentanone.
form	Solution
color	APHA: ≤20
Odor	Mild ether-like odor detectable at 0.8 to 172 ppm (mean = 12 ppm)
PH	6-8 (500g/l, H2O, 20℃)
explosive limit	1.7-25.2%(V)
Water Solubility	SOLUBLE
λmax	λ: 220 nm Amax: ≤0.70 λ: 235 nm Amax: ≤0.50 λ: 250 nm Amax: ≤0.20 λ: 270 nm Amax: ≤0.10 λ: 295-400 nm Amax: ≤0.01
Sensitive	Hygroscopic
Merck	14,3300
BRN	102551
Henry's Law Constant	4.89(x 10-6 atm?m3/mol) (static headspace-GC, Welke et al., 1998)
Dielectric constant	2.2（25℃）
Exposure limits	TLV-TWA 25 ppm (≈90 mg/m3) (ACGIH), 100 ppm (MSHA and OSHA); carcinogenicity: Animal Sufficient Evidence (IARC).
Stability:	Stable. Incompatible with oxidizing agents, oxygen, halogens, reducing agents, moisture. Highly flammable - note wide explosive range. May form explosive peroxides in storage (rate of formation increased by heating, evaporation or exposure to light).
InChIKey	RYHBNJHYFVUHQT-UHFFFAOYSA-N
LogP	-0.42 at 20℃
Surface tension	32.71mN/m at 293.15K
CAS DataBase Reference	123-91-1(CAS DataBase Reference)
IARC	2B (Vol. 11, Sup 7, 71) 1999
NIST Chemistry Reference	1,4-Dioxane(123-91-1)
EPA Substance Registry System	1,4-Dioxane (123-91-1)
ECETOC JACC REPORT	1,4-Dioxane (123-91-1)

Safety Information

Hazard Codes	Xn,F,T
Risk Statements	45-46-11-36/38-48/23/24/25-65-66-40-36/37-19-41-37/38-39/23/24/25-23/24/25-48/20/22-38-22-36/37/38-10
Safety Statements	9-16-36/37-46-45-53-7-62-26-24/25-23-S9-S46-S36/37-S16
RIDADR	UN 1993 3/PG 2
OEL	Ceiling: 1 ppm (3.6 mg/m3) [30-minute]
WGK Germany	3
RTECS	JG8225000
F	8
Autoignition Temperature	180 °C
TSCA	Yes
HazardClass	3
PackingGroup	II
HS Code	29329990
Hazardous Substances Data	123-91-1(Hazardous Substances Data)
Toxicity	LD50 in mice, rats (ml/kg): 5.7, 5.2 orally (Laug)
IDLA	500 ppm

Product Application of 1,4-Dioxane CAS#123-91-1

Industrial applications of 1,4-dioxane are extensive, for instance, as solvent for cellulose acetate, ethyl cellulose, benzyl cellulose, resins, oils, waxes, and some dyes; as a solvent for paper, cotton, and textile processing; and for various organic and inorganic compounds and products. It is also used in automotive coolant liquid and in shampoos and other cosmetics as a degreasing agent and as a component of paint and varnish. Human exposures to 1,4-dioxane have been traced to multiple occupations and breathing of contaminated workplace air and drinking polluted water. Industrial uses of 1,4-dioxane are very many. For instance, it is used as solvent for celluloses, resins, lacquers, synthetic rubbers, adhesives, sealants, fats, oils, dyes, and protective coatings; as a stabiliser for chlorinated solvents and printing inks; and as a wetting and dispersing agent in textile processing agrochemicals and pharmaceuticals, in different processing of solvent-extraction processes, and in the preparation and manufacture of detergents.

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