Phosphate (phosphoric acid) salts have the following pKa values: k1=2.15, k2=6.82, k3=12.38.
A5764
Ammonium phosphate dibasic
reagent grade, ≥98.0%
Synonym(s):
Ammonium hydrogenphosphate, Diammonium hydrogenphosphate, di-Ammonium hydrogenphosphate (sec)
Sign Into View Organizational & Contract Pricing
Select a Size
100 G
€31.50
500 G
€74.40
1 KG
€120.00
2.5 KG
€222.00
About This Item
Linear Formula:
(NH4)2HPO4
CAS Number:
Molecular Weight:
132.06
EC Number:
MDL number:
UNSPSC Code:
12352300
PubChem Substance ID:
NACRES:
NA.21
Assay:
≥98.0%
Grade:
reagent grade
Form:
powder or crystals
Solubility:
water: soluble 132 g/L at 20 °C
Skip To
grade
reagent grade
Quality Level
Assay
≥98.0%
form
powder or crystals
pH
7.5-9.0 (25 °C, 132.1 g/L)
mp
155 °C (dec.) (lit.)
solubility
water: soluble 132 g/L at 20 °C
SMILES string
N.N.OP(O)(O)=O
InChI
1S/2H3N.H3O4P/c;;1-5(2,3)4/h2*1H3;(H3,1,2,3,4)
InChI key
MNNHAPBLZZVQHP-UHFFFAOYSA-N
Looking for similar products? Visit Product Comparison Guide
Related Categories
1 of 4
This Item | 215996 | 30402 | 379980 |
|---|---|---|---|
| form powder or crystals | form crystals or chunks, powder | form powder, crystals or granules | form crystalline |
| solubility water: soluble 132 g/L at 20 °C | solubility - | solubility - | solubility - |
| assay ≥98.0% | assay ≥98% | assay ≥98% (alkalimetric) | assay ≥99.99% trace metals basis |
| Quality Level 100 | Quality Level 200 | Quality Level 100 | Quality Level 100 |
| grade reagent grade | grade ACS reagent | grade ACS reagent, puriss. p.a. | grade - |
| pH 7.5-9.0 (25 °C, 132.1 g/L) | pH 7.7-8.1 (25 °C, 5%) | pH 7.7-8.1 (25 °C, 5%) | pH - |
Application
Ammonium phosphate dibasic may be used in the following studies:
- As an activator in generating activated carbon using waste ramulus mori as a source material.[1]
- To compose the mobile phase for the removal of synthetic impurities from voriconazole by HPLC.[2]
- Preparation of Eu ions doped oxyapatite Ca8Gd2(PO4)6O2 (CGP) samples.[3]
- Syringe-type cartridge based electric field-assisted solid phase extraction of sunset yellow, an anionic dye.[4]
Storage Class Code
11 - Combustible Solids
WGK
WGK 1
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Regulatory Listings
Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.
EU REACH Annex XVII (Restriction List)
CAS No.
Choose from one of the most recent versions:
Already Own This Product?
Find documentation for the products that you have recently purchased in the Document Library.
Burdock GA.
Encyclopedia of Food and Color Additives, 1, 144-144 (1997)
Study of metastable equilibria in the ternary system NH4H 2PO4-(NH4)2HPO4-H2O at -7 and -9 ?C.
Fluid Phase Equilibria, 354, 47-53 (2013)
Preparation and characterization of activated carbon from waste ramulus mori.
Tang YB, et al.
Chemical Engineering Journal, 203, 19-24 (2012)
Development and validation of a stability-indicating HPLC method for determination of voriconazole and its related substances.
Gu P and Li Y.
Journal of Chromatographic Science, 47(7), 594-598 (2009)
Effect of Ammonium Salts on an Illitic Shale.
Bauleke MP and Dodd CM.
Journal of the American Ceramic Society. American Ceramic Society, 40(10), 325-334 (1957)
-
What is the Pka of Ammonium Phosphate dibasic?
1 answer-
Helpful?
-
-
Why is the water solubility so much lower than the 57-58% reported elsewhere?
1 answer-
The solubility of this product is tested at 100 mg/mL in water while the product page suggests it is soluble at 132 g/L (132 mg/mL) in water. Neither of these are reported to be the maximum solubility rate, however these concentrations are suitable for most applications. The CRC Handbook lists the solubility of this compound at 69.5g/100g water. This is the rate published on PubChem. This information may be reviewed at the link below:
https://pubchem.ncbi.nlm.nih.gov/compound/24540#section=SolubilityHelpful?
-
Active Filters
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