MilliporeSigma
All Photos(2)

1.06342

Supelco

Sodium dihydrogen phosphate dihydrate

for analysis EMSURE® Reag. Ph Eur

Synonym(s):
Sodium phosphate monobasic dihydrate, mono-Sodium orthophosphate, Sodium biphosphate, Sodium phosphate monobasic, Sodium dihydrogen phosphate dihydrate
Linear Formula:
NaH2PO4 · 2H2O
CAS Number:
Molecular Weight:
156.01
MDL number:
EC Index Number:
231-449-2

Agency

reag. Ph. Eur.

Quality Level

product line

EMSURE®

Assay

99.0-100.5% dry basis (alkalimetric)

form

crystals

potency

8290 mg/kg LD50, oral (Rat)
>7940 mg/kg LD50, skin (Rabbit)

impurities

≤0.15% In water insoluble matter (calculated on dried substance)

loss

21.5-24.0% loss on drying, 130 °C

pH

4.5 (25 °C, 12 g/L in H2O)

mp

60 °C

solubility

850 g/L

density

1.915 g/cm3 at 20 °C

bulk density

1000 kg/m3

anion traces

chloride (Cl-): ≤0.0005%
fluoride (F-): ≤0.001%
phosphate, phosphite (as H3PO4): ≤0.5%
sulfate (SO42-): ≤0.01%

cation traces

Al:, passes test (detectable with ammonia)
As: ≤0.00005%
Ca: ≤0.005%
Ca:, passes test (detectable with ammonia)
Cd: ≤0.0001%
Co: ≤0.005%
Cu: ≤0.005%
Fe: ≤0.001%
Hg: ≤0.0001%
K: ≤0.005%
Mg: ≤0.005%
N: ≤0.001%
Ni: ≤0.005%
Pb: ≤0.0004%
Zn: ≤0.025%
heavy metals (as Pb): ≤0.0005%

storage temp.

2-30°C

SMILES string

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

InChI

1S/Na.H3O4P.2H2O/c;1-5(2,3)4;;/h;(H3,1,2,3,4);2*1H2/q+1;;;/p-1

InChI key

VBJGJHBYWREJQD-UHFFFAOYSA-M

Looking for similar products? Visit Product Comparison Guide

Related Categories

Compare Similar Items

View Full Comparison

Show Differences

1 of 4

This Item
1.936241.063451.37018
form

crystals

form

-

form

solid

form

solid

impurities

≤0.15% In water insoluble matter (calculated on dried substance)

impurities

-

impurities

-

impurities

-

pH

4.5 (25 °C, 12 g/L in H2O)

pH

-

pH

4.5 (25 °C, 12 g/L in H2O)

pH

4.5 (25 °C, 12 g/L in H2O)

mp

60 °C

mp

-

mp

60 °C

mp

60 °C

solubility

850 g/L

solubility

-

solubility

850 g/L

solubility

-

Analysis Note

Identity: passes test
Appearance of solution: passes test
Assay (alkalimetric, calculated on dried substance): 99.0 - 100.5 %
In water insoluble matter (calculated on dried substance): ≤ 0.15 %
pH-value (1 %, water): 4.1 - 5.0
pH-value (5 %; water): 4.2 - 4.5
Chloride (Cl): ≤ 0.0005 %
Fluoride (F): ≤ 0.001 %
Total nitrogen (as N): ≤ 0.001 %
Hydrogenphosphate (HPO₄): ≤ 0.5 %
Sulfate (SO₄): ≤ 0.01 %
Heavy metals (as Pb): ≤ 0.0005 %
Al, Ca and other elements detectable with ammonia: passes test
As (Arsenic): ≤ 0.00005 %
Ca (Calcium): ≤ 0.005 %
Cd (Cadmium): ≤ 0.0001 %
Co (Cobalt): ≤ 0.005 %
Cu (Copper): ≤ 0.005 %
Fe (Iron): ≤ 0.001 %
Hg (Mercury): ≤ 0.0001 %
K (Potassium): ≤ 0.005 %
Mg (Magnesium): ≤ 0.005 %
Ni (Nickel): ≤ 0.005 %
Pb (Lead): ≤ 0.0004 %
Zn (Zinc): ≤ 0.025 %
Substances reducing potassium permanganate (as O): passes test
Loss on drying (130 °C): 21.5 - 24.0 %
Corresponds to Reag. Ph. Eur.

Legal Information

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

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

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