Merck
All Photos(4)

RDD022

Sigma-Aldrich

Sodium phosphate dibasic

anhydrous, free-flowing, Redi-Dri, ReagentPlus®, ≥99.0%

Sign Into View Organizational & Contract Pricing

Select a Size

Synonym(s):
sec-Sodium phosphate, Disodium hydrogen phosphate, Disodium phosphate, Sodium hydrogenphosphate
Linear Formula:
Na2HPO4
CAS Number:
Molecular Weight:
141.96
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.25

grade

anhydrous

Quality Level

product line

ReagentPlus®
Redi-Dri

Assay

≥99.0%

form

powder

quality

free-flowing

loss

≤1.0% loss on drying

pH

8.9-9.2 (25 °C, 50 g/L in water)

pKa (25 °C)

(1) 2.15, (2) 6.82, (3) 12.38 (phosphoric acid)

solubility

water: 100 mg/mL, clear, colorless

SMILES string

[Na+].[Na+].[H]OP([O-])([O-])=O

InChI

1S/2Na.H3O4P/c;;1-5(2,3)4/h;;(H3,1,2,3,4)/q2*+1;/p-2

InChI key

BNIILDVGGAEEIG-UHFFFAOYSA-L

Looking for similar products? Visit Product Comparison Guide

Related Categories

Compare Similar Items

View Full Comparison

Show Differences

1 of 4

This Item
S08767164271636
Sodium phosphate dibasic ReagentPlus®, ≥99.0%

Sigma-Aldrich

S0876

Sodium phosphate dibasic

-
Sodium phosphate dibasic purum p.a., anhydrous, ≥98.0% (T)

Sigma-Aldrich

71642

Sodium phosphate dibasic

-
Sodium phosphate dibasic BioUltra, for molecular biology, ≥99.5% (T)

Sigma-Aldrich

71636

Sodium phosphate dibasic

Premium Grade
product line

ReagentPlus®, Redi-Dri

product line

ReagentPlus®

product line

-

product line

BioUltra

assay

≥99.0%

assay

≥99.0%

assay

≥98.0% (T)

assay

≥99.5% (T)

form

powder

form

powder or crystals

form

powder

form

coarse powder, fine crystals

pH

8.9-9.2 (25 °C, 50 g/L in water)

pH

8.9-9.2 (25 °C, 50 g/L in water)

pH

8.8-9.4 (25 °C, 50 mg/mL in H2O)

pH

8.8-9.4 (25 °C, 0.5 M in H2O)

solubility

water: 100 mg/mL, clear, colorless

solubility

water: soluble 100 mg/mL

solubility

water: soluble 50 mg/mL at 25 °C

solubility

H2O: 0.5 M at 20 °C, clear, colorless

General description

Sodium phosphate dibasic is a commonly used buffer in frozen formulations.

Legal Information

ReagentPlus is a registered trademark of Merck KGaA, Darmstadt, Germany
Redi-Dri is a trademark of Sigma-Aldrich Co. LLC

Storage Class Code

13 - Non 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 5

1 of 5

Teddy J Zbacnik et al.
Journal of pharmaceutical sciences, 106(3), 713-733 (2016-11-30)
Buffers comprise an integral component of protein formulations. Not only do they function to regulate shifts in pH, they also can stabilize proteins by a variety of mechanisms. The ability of buffers to stabilize therapeutic proteins whether in liquid formulations

Articles

Redi-Dri™ – The World of Free-flowing Hygroscopic Products

Redi-Dri™ prevents hygroscopic powders, such as inorganic salts, from absorbing moisture and forming clumps, leaving the salts free-flowing every time.

Redi-Dri™ – The World of Free-flowing Hygroscopic Products

Redi-Dri™ prevents hygroscopic powders, such as inorganic salts, from absorbing moisture and forming clumps, leaving the salts free-flowing every time.

Redi-Dri™ – The World of Free-flowing Hygroscopic Products

Redi-Dri™ prevents hygroscopic powders, such as inorganic salts, from absorbing moisture and forming clumps, leaving the salts free-flowing every time.

Redi-Dri™ – The World of Free-flowing Hygroscopic Products

Redi-Dri™ prevents hygroscopic powders, such as inorganic salts, from absorbing moisture and forming clumps, leaving the salts free-flowing every time.

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