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1.02408

Supelco

Tris(hydroxymethyl)aminomethane

volumetric standard, secondary reference material for acidimetry, traceable to NIST Standard Reference Material (SRM) Certipur® Reag. Ph Eur,Reag. USP

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Synonym(s):
2-Amino-2-(hydroxymethyl)-1,3-propanediol, THAM, Tris base, Trometamol
Linear Formula:
NH2C(CH2OH)3
CAS Number:
Molecular Weight:
121.14
Beilstein:
741883
MDL number:
EC Index Number:
201-064-4

Agency

ISO 17025
reag. Ph. Eur.
reag. USP

Quality Level

vapor pressure

0.0267 hPa ( 20 °C)

form

solid

potency

>5000 mg/kg LD50, oral (Rat)
>5000 mg/kg LD50, skin (Rat)

technique(s)

titration: suitable

pH

10.2-10.6 (20 °C, 6 g/L in H2O)

useful pH range

7-9

pKa (25 °C)

8.1

bp

219-220 °C/10 mmHg (lit.)
219-220 °C/13.3 hPa

mp

167-172 °C (lit.)

solubility

678 g/L

density

1.35 g/cm3 at 23 °C

bulk density

840 kg/m3

storage temp.

15-25°C

SMILES string

NC(CO)(CO)CO

InChI

1S/C4H11NO3/c5-4(1-6,2-7)3-8/h6-8H,1-3,5H2

InChI key

LENZDBCJOHFCAS-UHFFFAOYSA-N

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This Item
2528591.083871.08382
Tris(hydroxymethyl)aminomethane ACS reagent, ≥99.8%

Sigma-Aldrich

252859

Tris(hydroxymethyl)aminomethane

Essential Grade
agency

ISO 17025

agency

-

agency

-

agency

reag. Ph. Eur.

vapor pressure

0.0267 hPa ( 20 °C)

vapor pressure

-

vapor pressure

0.0267 hPa ( 20 °C)

vapor pressure

0.0267 hPa ( 20 °C)

form

solid

form

crystalline

form

solid

form

solid

potency

>5000 mg/kg LD50, oral (Rat)

potency

-

potency

>5000 mg/kg LD50, oral (Rat), >5000 mg/kg LD50, skin (Rat)

potency

>5000 mg/kg LD50, oral (Rat), >5000 mg/kg LD50, skin (Rat)

pH

10.2-10.6 (20 °C, 6 g/L in H2O)

pH

-

pH

10.2-10.6 (20 °C, 6 g/L in H2O)

pH

10.2-10.6 (20 °C, 6 g/L in H2O)

General description

Tris(hydroxymethyl)aminomethane is a volumetric standard manufactured under rigorous conditions and measured with the highest possible precision. Its mass fraction is determined by potentiometric titration, and it is qualified in a DIN EN ISO/IEC 17025 accredited laboratory.

Please visit ISO certificates and Site Quality Self-Assessments to access the current certificates of accreditation.

Download your certificate at http://www.sigma-aldrich.com to view certified values, including uncertainty and expiry date.

Application

It finds its use as a certified reference material (CRM) for the standardization of volumetric solutions in acidimetric titrations, according to USP and Ph. Eur.

Features and Benefits

  • Available as a solid in a secure glass bottle to ensure its stability for the entire shelf life until opened.
  • Certified reference material according to ISO 17034
  • High-purity material traceable to NIST SRMs
  • Qualified in a DIN EN ISO/IEC 17025 accredited laboratory
  • In accordance with the chapter reagents of USP and Ph. Eur
  • High-quality offering accurate titer determinations
  • Accompanied by a certificate of analysis (CoA)

Packaging

SKU-pack size numbers ending with a "3" are SmartChemicals with an RFID tag on the label for seamless data transfer to the instrument, e.g. xxxxxx1003 or xxxxxxx 4003. More information on www.sigmaaldrich.com/SmartChemicals

Recommended products

Find a digital Reference Material for this product available on our online platform ChemisTwin® for NMR. You can use this digital equivalent on ChemisTwin® for your sample identity confirmation and compound quantification (with digital external standard). An NMR spectrum of this substance can be viewed and an online comparison against your sample can be performed with a few mouseclicks. Learn more here and start your free trial.

Legal Information

CERTIPUR is a registered trademark of Merck KGaA, Darmstadt, Germany

related product

Product No.
Description
Pricing

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


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Product Number
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25G
Pack Size/Quantity

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Articles

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