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Dimethyl sulfoxide Structure

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)
FEMA  3875 | METHYLSULFINYLMETHANE
refractive index  n20/D 1.479(lit.)
Flash point 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
explosive limit 1.8-63.0%(V)
Odor Type alliaceous
Evaporation Rate 4.3
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
Substances Added to Food (formerly EAFUS) DIMETHYL SULFOXIDE
FDA 21 CFR 177.1655; 177.2440
CAS DataBase Reference 67-68-5(CAS DataBase Reference)
EWG's Food Scores 2-5
NCI Dictionary of Cancer Terms dimethyl sulfoxide
FDA UNII YOW8V9698H
NCI Drug Dictionary dimethyl sulfoxide
ATC code G04BX13,M02AX03
NIST Chemistry Reference Dimethyl sulfoxide(67-68-5)
EPA Substance Registry System Dimethyl sulfoxide (67-68-5)

Safety

Symbol(GHS)
Signal wordWarning
Hazard statements H227-H320-H373
Precautionary statements P210e-P280a-P370+P378a-P403+P235-P501a-P260-P264-P305+P351+P338+P337+P313-P314-P501
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
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)
NFPA 704:
2
2 0

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