494429
Aldrich

Dimethyl sulfoxide

biotech. grade, 99.8%

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Synonym

DMSO

Methyl sulfoxide

Molecular Formula

(CH₃)₂SO

Molecular Weight

78.13

CAS Number

67-68-5

Beilstein Registry Number

506008

MDL number

MFCD00002089

PubChem Substance ID

24872902

EG/EC Number

200-664-3

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Descriptions

Caution

Supercools easily and remelts slowly at room temperature. Solidified product can be re-liquified by warming to room temperature without detriment to the product.

Packaging

1, 2 L in Sure/Seal™

200 L in Pure-Pac™ 1

18 L, 200 L packaged in Pure-Pac^® stainless steel containers; 1 L, 2 L packaged in Sure/Seal^® bottles

Legal Information

Pure-Pac is a registered trademark of Sigma-Aldrich Biotechnology LP and Sigma-Aldrich Co.

Properties

grade

biotech. grade

vapor density

2.7 (vs air)

vapor pressure

0.42 mmHg ( 20 °C)

assay

99.8%

autoignition temp.

573 °F

expl. lim.

42 %± , 63 °F

total impurities

<0.005% water

evapn. residue

<0.0005%

refractive index

n20/D 1.479(lit.)

189 °C(lit.)

16-19 °C(lit.)

density

1.10 g/mL(lit.)

H₂O reference

UV absorption

λ: 270 nm A_max: 1.00

λ: 280 nm A_max: 0.30

λ: 295 nm A_max: 0.10

λ: 350-400 nm A_max: 0.01

References

Merck

Merck 13,3285

Beilstein

Beil. 1,IV,1277

Fieser

Fieser 1,296 / Fieser 2,157 / Fieser 3,119 / Fieser 4,192 / Fieser 5,263 / Fieser 6,225 / Fieser 7,133 / Fieser 8,198 / Fieser 9,184 / Fieser 9,189 / Fieser 10,166 / Fieser 11,214 / Fieser 12,212 / Fieser 13,124 / Fieser 16,149

reference

Aldrich MSDS 1, 1308:D / Corp MSDS 1 (2), 2440:C / FT-IR 2 (1), 1492:B / FT-IR 1 (1), 879:A / FT-NMR 1 (1), 1417:A / IR-Spectra (3), 529:A / NMR-Reference 2 (2), 781:A / RegBook 1 (1), 1043:A / Sax 6, 1201 / Structure Index 1, 162:A:1 / Vapor Phase 3, 831:A

Safety

WGK Germany

RTECS

PV6210000

UEL

28.50%(V)

LEL

2.60%(V)

Flash Point(F)

203 °F

Flash Point(C)

95 °C