Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf
63689
2-Mercaptoethanol
BioUltra, for molecular biology, ≥99.0% (GC)
Synonym(s):
β-Mercaptoethanol, 2-Hydroxyethylmercaptan, BME, Thioethylene glycol
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About This Item
Recommended Products
grade
for molecular biology
Quality Level
vapor density
2.69 (vs air)
vapor pressure
1 mmHg ( 20 °C)
product line
BioUltra
Assay
≥99.0% (GC)
form
liquid
expl. lim.
18 %
reaction suitability
reagent type: reductant
concentration
14.3 M (pure liquid)
technique(s)
RNA extraction: suitable
protein extraction: suitable
impurities
DNases, none detected
RNases, none detected
insoluble matter, passes filter test
phosphatases, none detected
proteases, none detected
refractive index
n20/D 1.500 (lit.)
n20/D 1.501
pH
4.5-6 (20 °C, 500 g/L)
bp
157 °C (lit.)
solubility
H2O: 0.5 M at 20 °C, clear, colorless
density
1.114 g/mL at 25 °C (lit.)
cation traces
Al: ≤0.5 mg/kg
Ba: ≤0.1 mg/kg
Bi: ≤0.1 mg/kg
Ca: ≤0.5 mg/kg
Cd: ≤0.05 mg/kg
Co: ≤0.02 mg/kg
Cr: ≤0.02 mg/kg
Cu: ≤0.02 mg/kg
Fe: ≤0.1 mg/kg
K: ≤0.5 mg/kg
Li: ≤0.1 mg/kg
Mg: ≤0.1 mg/kg
Mn: ≤0.02 mg/kg
Mo: ≤0.1 mg/kg
Na: ≤1 mg/kg
Ni: ≤0.05 mg/kg
Pb: ≤0.1 mg/kg
Sr: ≤0.1 mg/kg
Zn: ≤0.1 mg/kg
SMILES string
OCCS
λ
0.5 M in H2O
UV absorption
λ: 260 nm Amax: 1.5
λ: 280 nm Amax: 0.3
storage temp.
2-8°C
InChI
1S/C2H6OS/c3-1-2-4/h3-4H,1-2H2
InChI key
DGVVWUTYPXICAM-UHFFFAOYSA-N
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Application
Other Notes
Signal Word
Danger
Hazard Statements
Precautionary Statements
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 Code
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
Personal Protective Equipment
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How is shipping temperature determined? And how is it related to the product storage temperature?
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How can I determine the shelf life / expiration / retest date of this product?
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If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdfHelpful?
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How do I know when 2-Mercaptoethanol expires
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This material is quite stable when stored and handled properly. One visual indication of degradation would be a color change to a darker yellow to brown. This product is not assigned an expiration date or recommended retest date. Products with no expiration date or recommended retest date should be routinely inspected by customers to ensure they perform as expected. These products are also subject to a one year warranty from the date of shipment. For more information you may access the "Product Dating Information" document under "ADDITIONAL USEFUL DOCUMENTS ABOUT OUR PRODUCTS" at the bottom of the Quality Services page with this link: https://www.sigmaaldrich.com/life-science/quality-and-regulatory-management/quality-services
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