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Merck
CN

270431

Supelco

Dimethyl sulfoxide

HPLC grade, 99.9%

Synonym(s):

DMSO

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About This Item

Linear Formula:
(CH3)2SO
CAS Number:
67-68-5
Molecular Weight:
78.13
Beilstein:
506008
EC Number:
200-664-3
MDL number:
MFCD00002089
UNSPSC Code:
12190000
PubChem Substance ID:
329752939

Key Documents

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grade

HPLC grade

Quality Level

100

vapor density

2.7 (vs air)

vapor pressure

0.42 mmHg ( 20 °C)

Assay

99.9%

autoignition temp.

573 °F

expl. lim.

42 %, 63 °F

impurities

<0.050% water

evapn. residue

<0.0005%

refractive index

n20/D 1.479 (lit.)

bp

189 °C (lit.)
189 °C

mp

16-19 °C (lit.)

density

1.10 g/mL (lit.)

λ

H2O reference

UV absorption

λ: 270 nm Amax: 1.00
λ: 280 nm Amax: 0.30
λ: 295 nm Amax: 0.10
λ: 350-400 nm Amax: 0.01

SMILES string

CS(C)=O

InChI

1S/C2H6OS/c1-4(2)3/h1-2H3

InChI key

IAZDPXIOMUYVGZ-UHFFFAOYSA-N

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Disclaimer

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

Storage Class Code

10 - Combustible liquids

WGK

WGK 1

Flash Point(F)

188.6 °F - closed cup

Flash Point(C)

87 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Information

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Certificates of Analysis (COA)

Lot/Batch Number
00609LV
U14542
U13963
U13541
02839MC

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