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/418/501/product-dating-information-06-25-mk.pdf
63768
3-Mercaptopropionic acid
≥99.0% (HPLC)
Synonym(s):
3-MPA, 3-Sulfanylpropanoic acid, beta-Mercaptopropionic acid
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About This Item
vapor pressure
0.04 mmHg ( 20 °C)
Quality Segment
assay
≥99.0% (HPLC)
form
liquid
autoignition temp.
662 °F
refractive index
n20/D 1.492 (lit.), n20/D 1.493
bp
110-111 °C/15 mmHg (lit.)
mp
15-18 °C (lit.)
density
1.218 g/mL at 25 °C (lit.)
absorption
cut-off at 270 nm
SMILES string
OC(=O)CCS
InChI
1S/C3H6O2S/c4-3(5)1-2-6/h6H,1-2H2,(H,4,5)
InChI key
DKIDEFUBRARXTE-UHFFFAOYSA-N
Application
Other Notes
1 of 1
This Item | |||
|---|---|---|---|
| assay ≥99.0% (HPLC) | assay ≥99% | assay ≥99.0% (HPLC) | assay 96% |
| Quality Level 100 | Quality Level 200 | Quality Level 200 | Quality Level 100 |
| form liquid | form liquid | form powder or crystals | form solid |
| density 1.218 g/mL at 25 °C (lit.) | density 1.218 g/mL at 25 °C (lit.) | density - | density - |
| mp 15-18 °C (lit.) | mp 15-18 °C (lit.) | mp 213-218 °C (lit.) | mp 48-52 °C |
| absorption cut-off at 270 nm | absorption - | absorption - | absorption - |
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signalword
Danger
hcodes
Hazard Classifications
Acute Tox. 3 Oral - Acute Tox. 4 Inhalation - Eye Dam. 1 - Met. Corr. 1 - Skin Corr. 1B
Storage Class
6.1A - Combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials
wgk
WGK 1
flash_point_f
200.1 °F - closed cup
flash_point_c
93.4 °C - closed cup
ppe
Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter
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How can I determine the shelf life / expiration / retest date of this product?
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How is shipping temperature determined? And how is it related to the product storage temperature?
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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
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