MilliporeSigma
All Photos(1)

Documents

90279

Sigma-Aldrich

Triethanolamine

≥99.0% (GC)

Sign Into View Organizational & Contract Pricing

Synonym(s):
2,2′,2′′-Nitrilotriethanol, Tris(2-hydroxyethyl)amine
Linear Formula:
(HOCH2CH2)3N
CAS Number:
Molecular Weight:
149.19
Beilstein/REAXYS Number:
1699263
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.25

vapor density

5.14 (vs air)

vapor pressure

0.01 mmHg ( 20 °C)

assay

≥99.0% (GC)

form

liquid
viscous liquid

autoignition temp.

600 °F

expl. lim.

8.5 %

impurities

≤0.1% ethanolamine (GC)
≤0.2% water
≤0.3% diethanolamine (GC)

refractive index

n20/D 1.485 (lit.)

pH

10.5-11.5 (25 °C, 149 g/L)

useful pH range

7.3-8.3

pKa (25 °C)

7.8

bp

190-193 °C/5 mmHg (lit.)

mp

17.9-21 °C (lit.)

solubility

H2O: 1 M, clear, colorless

density

1.124 g/mL at 25 °C (lit.)

anion traces

chloride (Cl-): ≤5 mg/kg
sulfate (SO42-): ≤20 mg/kg

cation traces

Ca: ≤5 mg/kg
Cd: ≤1 mg/kg
Co: ≤1 mg/kg
Cr: ≤1 mg/kg
Cu: ≤1 mg/kg
Fe: ≤1 mg/kg
K: ≤20 mg/kg
Mg: ≤1 mg/kg
Mn: ≤1 mg/kg
Ni: ≤1 mg/kg
Pb: ≤1 mg/kg
Zn: ≤1 mg/kg

SMILES string

OCCN(CCO)CCO

InChI

1S/C6H15NO3/c8-4-1-7(2-5-9)3-6-10/h8-10H,1-6H2

InChI key

GSEJCLTVZPLZKY-UHFFFAOYSA-N

Looking for similar products? Visit Product Comparison Guide

Related Categories

Compare Similar Items

View Full Comparison

Show Differences

1 of 4

This Item
337299027816303
vibrant-m

90279

Triethanolamine

-
vibrant-m

33729

Triethanolamine

-
vibrant-m

90278

Triethanolamine

Premium Grade
vibrant-m

16303

Triethanolamine

-
solubility

H2O: 1 M, clear, colorless

solubility

soluble 149 g/L at 20 °C (completely)

solubility

H2O: 1 M at 20 °C, clear, colorless

solubility

-

assay

≥99.0% (GC)

assay

≥99% (GC)

assay

≥99.5% (GC)

assay

≥99% (GC)

impurities

≤0.1% ethanolamine (GC), ≤0.3% diethanolamine (GC), ≤0.2% water

impurities

≤0.0001% heavy metals (as Pb), ≤0.1% ethanolamine, ≤0.1% water (Karl Fischer), ≤0.5% diethanolamine (GC)

impurities

insoluble matter, passes filter test, ≤0.1% ethanolamine (GC), ≤0.2% water, ≤0.3% diethanolamine (GC)

impurities

≤0.2% water (Karl Fischer), ≤1% diethanolamine (GC)

expl. lim.

8.5 %

expl. lim.

8.5 %

expl. lim.

8.5 %

expl. lim.

8.5 %

pH

10.5-11.5 (25 °C, 149 g/L)

pH

-

pH

10.5-11.5 (25 °C, 1 M in H2O)

pH

-

General description

Triethanolamine (TEA) belongs to the family of ethanolamine. It includes the properties of both amines and alcohols. Addition of TEA to an acidic buffer facilitates the determination of fluoride in inorganic orthophosphates by using a fluoride-selective electrode.

Application

Triethanolamine (TEA) has been used:
  • as a component of the acetylation working solution
  • in the preparation of polyethylene glycol (PEG) hydrogels
  • as a constituent of CO2/O2 specificity (SC/O) assay buffer

Storage Class

10 - Combustible liquids

wgk_germany

WGK 1

flash_point_f

354.2 °F - closed cup

flash_point_c

179 °C - closed cup

ppe

Eyeshields, Gloves, type ABEK (EN14387) respirator filter


Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

Already Own This Product?

Documents related to the products that you have purchased in the past have been gathered in the Document Library for your convenience.

Visit the Document Library

Difficulty Finding Your Product Or Lot/Batch Number?

Product numbers are combined with Pack Sizes/Quantity when displayed on the website (example: T1503-25G). Please make sure you enter ONLY the product number in the Product Number field (example: T1503).

Example:

T1503
Product Number
-
25G
Pack Size/Quantity

Additional examples:

705578-5MG-PW

PL860-CGA/SHF-1EA

MMYOMAG-74K-13

1000309185

enter as 1.000309185)

Having trouble? Feel free to contact Technical Service for assistance.

Lot and Batch Numbers can be found on a product's label following the words 'Lot' or 'Batch'.

Aldrich Products

  • For a lot number such as TO09019TO, enter it as 09019TO (without the first two letters 'TO').

  • For a lot number with a filling-code such as 05427ES-021, enter it as 05427ES (without the filling-code '-021').

  • For a lot number with a filling-code such as STBB0728K9, enter it as STBB0728 without the filling-code 'K9'.

Not Finding What You Are Looking For?

In some cases, a COA may not be available online. If your search was unable to find the COA you can request one.

Request COA

Customers Also Viewed

Slide 1 of 6

1 of 6

Rubisco Extraction and Purification from Diatoms
Young, J, et al.
Bio-protocol, 7, 2586-2594 (2017)
Toxicology of mono-, di-, and triethanolamine
Knaak,JB, et al.
Reviews of Environmental Contamination and Toxicology, 1-86 (1997)
Enhancing the reliability and throughput of neurosphere culture on hydrogel microwell arrays
Cordey, M, et al.
Stem Cells, 2586-2594 (2008)
Sensitive fluorescent hybridisation protocol development for simultaneous detection of microRNA and cellular marker proteins (in the retina)
Kovacs VA, et al.
Histochemistry and Cell Biology, 150(5), 557-566 (2018)
The use of triethanolamine in a buffer for the determination of fluoride in calcium and transition metal orthophosphates, using a fluoride-selective el
Duff, Edward J and Stuart, JL
Talanta, 19(1), 74-76 (1972)

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service