The product is considered colorless, as values below 5 Hazen (and even up to 10 Hazen) are not visibly distinguishable from clear.
8.03235
N,N-Dimethylacetamide
for synthesis
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Synonym(s):
N,N-Dimethylacetamide, Acetic acid dimethylamide, Acetyldimethylamine, DMA
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| Size/SKU | Availability | Price |
|---|---|---|
1 L | Check Cart for Availability | $66.50 |
2.5 L | Check Cart for Availability | $143.00 |
25 L | Check Cart for Availability | $617.00 |
About This Item
Linear Formula:
CH3CON(CH3)2
CAS Number:
Molecular Weight:
87.12
UNSPSC Code:
12352111
EC Index Number:
204-826-4
NACRES:
NA.22
MDL number:
Assay:
≥99% (GC)
Grade:
synthesis grade
Bp:
165-166 °C/1013 hPa
Vapor pressure:
1.76 hPa ( 20 °C)
grade
synthesis grade
Quality Segment
vapor pressure
1.76 hPa ( 20 °C)
assay
≥99% (GC)
form
liquid
autoignition temp.
400 °C
potency
5830 mg/kg LD50, oral (Rat)
expl. lim.
1.7-11.5 % (v/v)
dilution
(for synthesis)
pH
4 (20 °C, 200 g/L in H2O)
bp
165-166 °C/1013 hPa
mp
-20 °C
transition temp
flash point 64 °C
solubility
soluble >1000 g/L
density
0.94 g/cm3 at 20 °C
storage temp.
2-30°C
SMILES string
N(C)(C)C(=O)C
InChI
1S/C4H9NO/c1-4(6)5(2)3/h1-3H3
InChI key
FXHOOIRPVKKKFG-UHFFFAOYSA-N
General description
N,N-Dimethylacetamide (DMAc) is a water-miscible organic solvent used in the synthesis of styrene, vinyl resin, linear polyester, acrylic fiber, plastic, pesticide, and synthetic leather. It participates in dehydrogenation, dehydration, halogenation, deprotonation reactions and reductive carbonylation of transition metals. It can also act as catalysts, promoters, halogen/alkoxy or hydroxyl/halogen exchange mediators, reducing agents, and sources of the base.
Application
N,N-Dimethylacetamide is used as a solvent:
- In the synthesis of poly(amide-hydrazide)s–graphene composites.
- In the synthesis of N,N′-1,2-ethanediylbis-(4-hydroxy-pentanamide) and 4-hydroxy-N-(2- hydroxyethyl)-pentanamide based polyurethanes in presence of triethylamine catalyst.
Features and Benefits
N,N-Dimethylacetamide has :
- High dissolution power of various substrate.
- High capacity to solvate anions.
Analysis Note
Assay (GC, area%): ≥ 99.0 % (a/a)
Density (d 20 °C/ 4 °C): 0.940 - 0.942
Water (K. F.): ≤ 0.30 %
Identity (IR): passes test
Density (d 20 °C/ 4 °C): 0.940 - 0.942
Water (K. F.): ≤ 0.30 %
Identity (IR): passes test
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Danger
Hazard Classifications
Acute Tox. 4 Dermal - Acute Tox. 4 Inhalation - Eye Irrit. 2 - Repr. 1B
wgk
WGK 2
flash_point_f
147.2 °F - closed cup
flash_point_c
64 °C - closed cup
hcodes
Storage Class
6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects
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While the previous CoA from 2025 specifies the color/visibility as "colorless", this new batch specifies it as "<5, Hazen". How can I be sure that it's colorless? This'll be used for manufacturing and any type of even slight coloration will be a risk.
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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/418/501/product-dating-information-06-25-mk.pdfHelpful?
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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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