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.pdf
270458
NMP
suitable for HPLC, ≥99%
Synonym(s):
1-Methyl-2-pyrrolidone, N-Methyl-2-pyrrolidone, NMP
About This Item
81-82 °C/10 mmHg (lit.)
0.99 mmHg ( 40 °C)
Recommended Products
Product Name
1-Methyl-2-pyrrolidinone, suitable for HPLC, ≥99%
grade
HPLC grade
vapor density
3.4 (vs air)
vapor pressure
0.29 mmHg ( 20 °C)
0.99 mmHg ( 40 °C)
Assay
≥99%
form
liquid
autoignition temp.
518 °F
purified by
glass distillation
expl. lim.
9.5 %
technique(s)
HPLC: suitable
impurities
<0.050% water
color
APHA: ≤10
refractive index
n20/D 1.47 (lit.)
pH
7.7-10.0 (20 °C, 100 g/L)
bp
202 °C (lit.)
81-82 °C/10 mmHg (lit.)
mp
−24 °C (lit.)
density
1.028 g/mL at 25 °C (lit.)
λ
H2O reference
UV absorption
λ: 285 nm Amax: 1.00
λ: 300 nm Amax: 0.50
λ: 325 nm Amax: 0.10
λ: 350-400 nm Amax: 0.01
application(s)
food and beverages
SMILES string
CN1CCCC1=O
InChI
1S/C5H9NO/c1-6-4-2-3-5(6)7/h2-4H2,1H3
InChI key
SECXISVLQFMRJM-UHFFFAOYSA-N
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General description
It also participates in the following:[1]
- synthesis of cyanotrimethylsilane
- decarbonylation of aldehydes
- reduction of benzaldehydes and ketones to the corresponding alcohols
- preparation of natural products
Application
Packaging
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Signal Word
Danger
Hazard Statements
Precautionary Statements
Hazard Classifications
Eye Irrit. 2 - Repr. 1B - Skin Irrit. 2 - STOT SE 3
Target Organs
Respiratory system
Storage Class Code
6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects
WGK
WGK 1
Flash Point(F)
195.8 °F - Pensky-Martens closed cup
Flash Point(C)
91 °C - Pensky-Martens closed cup
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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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