MilliporeSigma
All Photos(1)

567446

Millipore

Sodium citrate, dihydrate

Molecular Biology Grade

Sign Into View Organizational & Contract Pricing

Select a Size

Synonym(s):
Sodium citrate tribasic dihydrate, Citric acid trisodium salt dihydrate, Trisodium citrate dihydrate
Linear Formula:
HOC(COONa)(CH2COONa)2 · 2H2O
CAS Number:
Molecular Weight:
294.10
Beilstein:
6104939
MDL number:

grade

Molecular Biology

Quality Level

Assay

≥99% (titration)

form

crystalline solid

manufacturer/tradename

Calbiochem®

storage condition

OK to freeze

color

white

pKa (20 °C)

6.40

mp

>300 °C (lit.)

solubility

water: 100 mg/mL

cation traces

heavy metals: ≤0.001%
heavy metals (as Pb): ≤0.001%

absorption

≤0.015 at 260 nm
≤0.015 at 280 nm

foreign activity

DNases, proteases, RNases, none detected

shipped in

ambient

storage temp.

15-25°C

SMILES string

O.O.[Na+].[Na+].[Na+].OC(CC([O-])=O)(CC([O-])=O)C([O-])=O

InChI

1S/C6H8O7.3Na.2H2O/c7-3(8)1-6(13,5(11)12)2-4(9)10;;;;;/h13H,1-2H2,(H,7,8)(H,9,10)(H,11,12);;;;2*1H2/q;3*+1;;/p-3

InChI key

NLJMYIDDQXHKNR-UHFFFAOYSA-K

Looking for similar products? Visit Product Comparison Guide

Compare Similar Items

View Full Comparison

Show Differences

1 of 4

This Item
71405C725471402
Sodium citrate, dihydrate Molecular Biology Grade

Millipore

567446

Sodium citrate, dihydrate

-
Sodium citrate tribasic dihydrate BioUltra, for molecular biology

Sigma-Aldrich

71402

Sodium citrate tribasic dihydrate

Premium Grade
assay

≥99% (titration)

assay

≥99.0% (NT)

assay

≥98%

assay

-

form

crystalline solid

form

powder

form

powder

form

crystals

storage condition

OK to freeze

storage condition

-

storage condition

-

storage condition

-

color

white

color

-

color

-

color

-

pKa (20 °C)

6.40

pKa (20 °C)

-

pKa (20 °C)

-

pKa (20 °C)

-

General description

Widely used buffer in amino acid analysis.

Warning

Toxicity: Standard Handling (A)

Reconstitution

Following reconstitution, store at room temperature (20°C). Stock solutions are stable for up to 6 months at 20°C.

Legal Information

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

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

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’.

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 7

1 of 7

Citric acid anhydrous powder, EMPROVE® EXPERT, Ph. Eur., BP, ChP, JP, USP

SAFC

1.37002

Citric acid

Citric acid ACS reagent, ≥99.5%

Sigma-Aldrich

251275

Citric acid

TWEEN® 80 (Polysorbate) EMPROVE® ESSENTIAL, Ph. Eur., JP, NF

SAFC

8.17061

TWEEN® 80 (Polysorbate)

Lydia Maus et al.
Cell reports, 30(11), 3632-3643 (2020-03-19)
Although similar in molecular composition, synapses can exhibit strikingly distinct functional transmitter release and plasticity characteristics. To determine whether ultrastructural differences co-define this functional heterogeneity, we combine hippocampal organotypic slice cultures, high-pressure freezing, freeze substitution, and 3D-electron tomography to compare

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