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92262

Sigma-Aldrich

Trimethylamine solution

43.0-49.0% in H2O (T)

Synonym(s):

N,N,N-Trimethylamine, N,N-Dimethylmethanamine, TMA solution

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About This Item

Linear Formula:
(CH3)3N
CAS Number:
75-50-3
Molecular Weight:
59.11
Beilstein:
956566
EC Number:
200-875-0
MDL number:
MFCD00008327
UNSPSC Code:
12352100
PubChem Substance ID:
57653374
NACRES:
NA.22
Pricing and availability is not currently available.

form

liquid

Quality Level

200

concentration

43.0-49.0% in H2O (T)

density

0.83-0.88 g/mL at 20 °C

functional group

amine

SMILES string

CN(C)C

InChI

1S/C3H9N/c1-4(2)3/h1-3H3

InChI key

GETQZCLCWQTVFV-UHFFFAOYSA-N

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Application

Trimethylamine solution may be used for the fabrication of polysulfone membranes by introducing benzyl trimethylammonium cation groups. These membranes are useful in the development of anion exchange membrane fuel cells (AEMFCs).[1][2]

Signal Word

Danger

Hazard Statements

H224,H302,H314,H335

Hazard Classifications

Acute Tox. 4 Oral - Eye Dam. 1 - Flam. Liq. 1 - Skin Corr. 1 - STOT SE 3

Target Organs

Respiratory system

Storage Class Code

3 - Flammable liquids

WGK

WGK 1

Flash Point(F)

19.4 °F - closed cup

Flash Point(C)

-7 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number
BCCH3478
BCCH3181
BCCH0559
BCCH5059
BCCH6558

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Sigma-Aldrich

W550132

Trimethylamine solution

Using microbial desalination cells to reduce water salinity prior to reverse osmosis
Mehanna M
Energy & Environmental Science, 3(8), 1114-1120 (2010)
Crosslinked, epoxy-based anion conductive membranes for alkaline membrane fuel cells
Zhou J
Journal of Membrane Science, 350(1-2), 286-292 (2010)
S L Hillier
American journal of obstetrics and gynecology, 169(2 Pt 2), 455-459 (1993-08-01)
Bacterial vaginosis is characterized microbiologically by replacement of the Lactobacillus-predominant vaginal flora by Gardnerella vaginalis, Bacteroides species, Mobiluncus species, and genital mycoplasmas. A standardized, laboratory-based diagnostic test for bacterial vaginosis is desirable in those instances in which a microscope is
M Al-Waiz et al.
Clinical pharmacology and therapeutics, 42(5), 588-594 (1987-11-01)
Trimethylamine (TMA) and its N-oxide (TMAO) are normal components of human urine. They are present in the diet and also derived from the enterobacterial metabolism of precursors such as choline. Dietary TMA is almost entirely metabolized to and excreted as
Smaranda Craciun et al.
Proceedings of the National Academy of Sciences of the United States of America, 109(52), 21307-21312 (2012-11-16)
Choline and trimethylamine (TMA) are small molecules that play central roles in biological processes throughout all kingdoms of life. These ubiquitous metabolites are linked through a single biochemical transformation, the conversion of choline to TMA by anaerobic microorganisms. This metabolic
View All Related Papers

Questions

1–3 of 3 Questions  

  1. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. 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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  2. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. 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

      Helpful?

  3. I bought this solution without knowing that the concentration of TMA was not specifically defined. I measured the mass of 1mL of the solution to be 0.61g when the densitry range was given as 0.83-0.88 g/mL. How should I confirm the concentration of TMA?

    1 answer

    1. The density is confirmed on the lot-specific certificate of analysis. The concentration can be determined by [density x 1000 x percentage conc. / mw]. For example, lot BCCH3478 has a purity of 44.8% and a density of 0.862. The concentration for this particular lot is 6.53 M. Please see the link below to review this certificate of analysis:
      https://www.sigmaaldrich.com/certificates/Graphics/COfAInfo/fluka/pdf/PDF734034.pdf

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