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DMSO CAS#67-68-5

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Chemical Name：DMSO

CAS No.:67-68-5

Molecular Formula: C2H6OS

Molecular weight: 78.1334

Sample: Available

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Product Details

Products Description of DMSO CAS#67-68-5

Dimethylsulfoxide (DMSO for short) is a sulfur-containing organic compound. Its English name is Dimethylsulfoxide and its molecular formula is (CH3)2SO. It is a colorless and odorless transparent liquid at room temperature. It is a hygroscopic flammable liquid and has high polarity. , high boiling point, aprotic, miscible in water, extremely low toxicity, good thermal stability, not mixed with alkanes, soluble in most organic compounds such as water, ethanol, propanol, ether, benzene and chloroform, and is known as It is the "Universal Chemicalbook Solvent".

It is the one with the strongest solubility among commonly used organic solvents. It can dissolve most organic matter, including carbohydrates, polymers, peptides, and many inorganic salts and gases. It can dissolve a solute equivalent to 50-60% of its own weight (other general solvents can only dissolve 10-20%), so it is very important in sample management and high-speed drug screening. Under certain conditions, an explosive reaction can occur when dimethyl sulfoxide comes into contact with acid chlorides.

Dimethyl sulfoxide Chemical Properties

Melting point	18.4 °C
Boiling point	189 °C(lit.)
density	1.100 g/mL at 20 °C
vapor density	2.7 (vs air)
vapor pressure	0.42 mm Hg ( 20 °C)
refractive index	n20/D 1.479(lit.)
FEMA	3875 \| METHYLSULFINYLMETHANE
Fp	192 °F
storage temp.	Store at +5°C to +30°C.
solubility	H2O: miscible (completely)
pka	35(at 25℃)
form	liquid (temperature dependent)
color	clear colorless
Relative polarity	0.444
Odor	Mild garlic odor
Odor Type	alliaceous
explosive limit	1.8-63.0%(V)
Water Solubility	Soluble in water, methanol, acetone, ether, benzene, chloroform.
FreezingPoint	18.4℃
Sensitive	Hygroscopic
λmax	λ: 285 nm Amax: ≤0.20 λ: 295 nm Amax: ≤0.20
JECFA Number	507
Merck	14,3259
BRN	506008
Dielectric constant	41.9（55℃）
Stability:	Stable. Incompatible with a very wide range of materials, including acid chlorides, strong acids, strong oxidizing agents, strong reducing agents, phosphorus halides, moisture, copper wool + trichloroacetic acid. Reacts violently with a number of materials - consult a full data sheet before use. Hygroscopic.
InChIKey	IAZDPXIOMUYVGZ-UHFFFAOYSA-N
LogP	-1.35
CAS DataBase Reference	67-68-5(CAS DataBase Reference)
NIST Chemistry Reference	Dimethyl sulfoxide(67-68-5)
EPA Substance Registry System	Dimethyl sulfoxide (67-68-5)

2.Safety Information

Hazard Codes	Xi
Risk Statements	36/37/38
Safety Statements	24/25-37/39-26-36-23
RIDADR	NA 1993 / PGIII
WGK Germany	1
RTECS	PV6210000
F	3
Autoignition Temperature	215 °C
TSCA	Yes
HS Code	29309070
Hazardous Substances Data	67-68-5(Hazardous Substances Data)
Toxicity	LD50 orally in rats: 17.9 ml/kg (Bartsch)

Product Application of DMSO CAS#67-68-5

It can be used as organic solvent, reaction medium and organic synthesis intermediate. Very versatile.

This product has high selective extraction ability and is used as a polymerization and condensation solvent for acrylic resin and polysulfone resin, a polymerization spinning solvent for polyacrylonitrile and acetate fiber, and an extraction solvent for the separation of alkanes and aromatic hydrocarbons. Extraction of aromatic hydrocarbons and butadiene, reaction medium for acrylic spinning, plastic solvents, organic synthetic dyes, pharmaceuticals and other industries. In terms of medicine, dimethyl sulfoxide has anti-inflammatory and analgesic effects and has strong penetration into the skin. Therefore, it can dissolve certain drugs, allowing such drugs to penetrate into the human body to achieve therapeutic purposes. Utilizing the carrier properties of dimethyl sulfoxide, it can also be used as a pesticide additive.

Adding a small amount of dimethyl sulfoxide to some pesticides can help the pesticide penetrate into the plant to improve the efficacy. Dimethyl sulfoxide can also be used as a dyeing solvent, dye remover, and dyeing carrier for synthetic fibers. It can also be used as an absorbent for recovering acetylene and sulfur dioxide, a synthetic fiber modifier, an antifreeze, and a capacitor medium, brake oil, and rare metal extraction. Agents, etc.

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