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Calcium carbonate

Name: Calcium carbonate
Brand: MM

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

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About This Item

Linear Formula:

CaCO₃

CAS Number:

471-34-1

Molecular Weight:

100.09

Beilstein:

8008338

MDL number:

MFCD00010906

UNSPSC Code:

41116107

EC Index Number:

207-439-9

NACRES:

NA.24

Agency

ISO 17025
reag. USP

Quality Level

300

form

solid

potency

6450 mg/kg LD₅₀, oral (Rat)
>2000 mg/kg LD₅₀, skin (Rat)

technique(s)

titration: suitable

pH

9.5-10.5 (20 °C, 100 g/L in H₂O, slurry)

mp

825 °C (decomposition)

density

2.93 g/mL at 25 °C (lit.)

bulk density

300‑1400 kg/m³

storage temp.

15-25°C

SMILES string

[Ca++].[O-]C([O-])=O

InChI

1S/CH2O3.Ca/c2-1(3)4;/h(H2,2,3,4);/q;+2/p-2

InChI key

VTYYLEPIZMXCLO-UHFFFAOYSA-L

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Related Categories

Food & Cosmetic Component Standards

Physical & Chemical Property Standards

Titration Reagents

General description

Calcium carbonate volumetric standard is manufactured under stringent 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 complexometric 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

Legal Information

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

related product

Product No.

Description

Pricing

WGK

nwg

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

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’.

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Articles

Importance of Volumetric Solution Standardization

The titer determination or standardization of a titration solution is essential for accurate and reliable titration results.

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