If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/418/501/product-dating-information-06-25-mk.pdf
71636
Sodium phosphate dibasic
BioUltra, Molecular Biology, ≥99.5% (T)
Synonym(s):
sec-Sodium phosphate, Disodium hydrogen phosphate, Disodium phosphate, Sodium hydrogenphosphate
Select a Size
| Size/SKU | Availability | Price |
|---|---|---|
250 g | Please contact Customer Service for Availability | 2 320,00 CZK |
1 kg | Please contact Customer Service for Availability | 7 730,00 CZK |
About This Item
grade
Molecular Biology
Quality Segment
product line
BioUltra
assay
≥99.5% (T)
form
coarse powder, fine crystals, powder
impurities
DNases, none detected, RNases, none detected, insoluble matter, passes filter test, phosphatases, none detected, proteases, none detected, ≤0.001% total nitrogen (N)
loss
≤0.1% loss on drying, 110 °C
pH
8.8-9.4 (25 °C, 0.5 M in H2O)
pKa (25 °C)
(1) 2.15, (2) 6.82, (3) 12.38 (phosphoric acid)
solubility
H2O: 0.5 M at 20 °C, clear, colorless
anion traces
chloride (Cl-): ≤10 mg/kg, sulfate (SO42-): ≤50 mg/kg
cation traces
Al: ≤5 mg/kg, As: ≤0.2 mg/kg, Ba: ≤5 mg/kg, Bi: ≤5 mg/kg, Ca: ≤10 mg/kg, Cd: ≤5 mg/kg, Co: ≤5 mg/kg, Cr: ≤5 mg/kg, Cu: ≤5 mg/kg, Fe: ≤5 mg/kg, K: ≤50 mg/kg, Li: ≤5 mg/kg, Mg: ≤5 mg/kg, Mn: ≤5 mg/kg, Mo: ≤5 mg/kg, Ni: ≤5 mg/kg, Pb: ≤5 mg/kg, Sr: ≤10 mg/kg, Zn: ≤5 mg/kg
λ
0.5 M in H2O
UV absorption
λ: 260 nm Amax: ≤0.025, λ: 280 nm Amax: ≤0.020
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
1 of 1
This Item | |||
|---|---|---|---|
| description BioUltra, Molecular Biology, ≥99.5% (T) | description BioXtra, ≥99.0% | description puriss. p.a., ACS reagent, anhydrous, ≥99.0% (T) | description ACS Reagent Grade. Useful in conjunction with Sodium Phosphate, Monobasic in the preparation of biological buffers. |
| assay ≥99.5% (T) | assay ≥99.0% | assay ≥99.0% (T) | assay - |
| grade Molecular Biology | grade - | grade puriss. p.a., ACS reagent | grade ACS reagent |
| Quality Level 200 | Quality Level 200 | Quality Level 200 | Quality Level 100 |
| product line BioUltra | product line BioXtra | product line - | product line - |
| form powder, coarse powder, fine crystals | form powder or crystals | form powder (or crystals) | form solid |
| pH 8.8-9.4 (25 °C, 0.5 M in H2O) | pH 8.0-11.0 (20 °C, 1 M in H2O) | pH 8.7-9.3 (25 °C, 50 mg/mL in H2O) | pH - |
Still not finding the right product?
Explore all of our products under Sodium phosphate dibasic
Storage Class
13 - Non Combustible Solids
Flash Point (°F)
Not applicable
Flash Point (°C)
Not applicable
PPE (personal protective equipment)
Eyeshields, Gloves, type N95 (US)
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.
-
How can I determine the shelf life / expiration / retest date of this product?
1 answer-
Helpful?
-
-
How is shipping temperature determined? And how is it related to the product storage temperature?
1 answer-
Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf
Helpful?
-