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Merck

19-1335

2-Mercaptoethanol

≥99.0%

Synonym(s):

β-Mercaptoethanol, 2-Hydroxyethylmercaptan, BME, Thioethylene glycol

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About This Item

Linear Formula:
HSCH2CH2OH
CAS Number:
60-24-2
Molecular Weight:
78.13
EC Number:
200-464-6
UNSPSC Code:
12161504
PubChem Substance ID:
329751822
Beilstein/REAXYS Number:
773648
MDL number:
MFCD00004890
Assay:
≥99.0%
Bp:
157 °C (lit.)
Vapor pressure:
1 mmHg ( 20 °C)

Key Documents

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InChI

1S/C2H6OS/c3-1-2-4/h3-4H,1-2H2

InChI key

DGVVWUTYPXICAM-UHFFFAOYSA-N

SMILES string

OCCS

vapor density

2.69 (vs air)

vapor pressure

1 mmHg ( 20 °C)

assay

≥99.0%

form

liquid

expl. lim.

18 %

availability

available only in Japan

concentration

14.3 M (pure liquid)

dilution

(for analytical testing)

pH

4.5-6 (20 °C, 500 g/L)

bp

157 °C (lit.)

density

1.114 g/mL at 25 °C (lit.)

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Application

BME is suitable for reducing protein disulfide bonds prior to polyacrylamide gel electrophoresis and is usually included in a sample buffer for SDS-PAGE at a concentration of 5%. Cleaving intermolecular (between subunits) disulfide bonds allows the subunits of a protein to separate independently on SDS-PAGE. Cleaving intramolecular (within subunit) disulfide bonds allows the subunits to become completely denatured so that each peptide migrates according to its chain length with no influence due to secondary structure.
for biological purposes

signalword

Danger

Hazard Classifications

Acute Tox. 2 Dermal - Acute Tox. 3 Inhalation - Acute Tox. 3 Oral - Aquatic Acute 1 - Aquatic Chronic 2 - Eye Dam. 1 - Repr. 2 - Skin Irrit. 2 - Skin Sens. 1A - STOT RE 2 Oral

target_organs

Liver,Heart

Storage Class

6.1A - Combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials

wgk

WGK 3

flash_point_f

165.2 °F - closed cup

flash_point_c

74 °C - closed cup

ppe

Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

Poisonous substance

pdsc

Class II Designated Chemical Substances

prtr

Group 4: Flammable liquids + Type 3 petroleums + Hazardous rank III + Water soluble liquid

fsl

Substances Subject to be Indicated Names

ishl_indicated

Substances Subject to be Notified Names

ishl_notified

19-1335-5-500ML-J: + 19-1335-2-25G-J:

jan

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Certificates of Analysis (COA)

Lot/Batch Number
A3934
A0562
A8467
A2347
A8149

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