Advanced Search



Sodium bicarbonate

SIAL/NIST2191A - NIST® SRM® 2191a, pD Standard

Synonym: Sodium hydrogen carbonate

CAS Number: 144-55-8
Empirical Formula (Hill Notation): CHNaO3
Molecular Weight: 84.01
EC Number: 205-633-8
MDL Number: MFCD00003528
Linear Formula: NaHCO3
Product Type: Chemical
Catalog Number PKG Qty. Price Quantity
45-NIST2191A 30 g
 $782.00
1/EA		 Add To Favorites

 

application(s) general analytical
density 2.16 g/mL at 25 °C (lit.)
form crystals
grade certified reference material
InChI 1S/CH2O3.Na/c2-1(3)4;/h(H2,2,3,4);/q;+1/p-1
InChI key UIIMBOGNXHQVGW-UHFFFAOYSA-M
manufacturer/tradename NIST®
packaging pkg of 30 g
pH 8.3(0.84% solution)
pKa (25 °C) (1) 6.37, (2) 10.25 (carbonic acid)
Quality Level 100 
SMILES string [Na+].OC([O-])=O
Application: Sodium bicarbonate standard reference material (SRM) is intended for preparing buffer solution, used to calibrate electrodes for pD measuring system.
Features and Benefits: • SRM 2191A certified values are correspond to log (1/aD).
• The NIST certificate is provided with storage and stability instructions.
General description: Each unit of SRM 2191A contains 30g of sodium bicarbonate.

SRM 2191A_cert 

SRM 2191A_SDS 
Legal Information: NIST is a registered trademark of National Institute of Standards and Technology
Legal Information: SRM is a registered trademark of National Institute of Standards and Technology
Other Notes: Please download a current certificate at nist.gov/SRM for current analytes and certified values.
RIDADR NONH for all modes of transport
WGK Germany WGK 1
Flash Point(F) Not applicable
Flash Point(C) Not applicable
Density 2.16 g/mL at 25 °C (lit.)
UNSPSC 41116107

The following items have been added to your cart:

Choose a favorite list for this item:
Catalog Number Description Price
$

Returns/Order support

Please fill out the form below if you want to request order support from Krackeler Scientific.


Quick Order

* Required


New Tariffs & Effects on Pricing

Tariff note: As we navigate the current environment of tariff surcharges and mid-year manufacturer price increases, we want to keep you informed. While we have avoided making specific decisions thus far, we anticipate that we will be forced to implement a cost adjustment policy to offset the fees we have already been absorbing. We are committed to transparency and moderation in this process.

800-334-7725
office@krackeler.com


Play Video

To Request a Quote

  1. Search or Browse for items and add to them to your Shopping Cart.
  2. Click the "Request Quote" button at the bottom of the Shopping Cart page.
  3. Fill out required fields.
  4. Optionally you can convert to standard checkout mode by choosing a payment type.
  5. Click "Request Quote" at the bottom of the page.

You will be contacted with a quote.

To Order From a Quote

  1. Register and login to the website.
  2. Receive a quote from your sales representative or customer service.
  3. Have your copy of the quote in hand.
  4. Visit our quote module to search for your quote.
Back to Top