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
S2429
Sodium phosphate dibasic heptahydrate
meets USP testing specifications
Synonym(s):
Disodium hydrogen phosphate heptahydrate, Disodium phosphate
Select a Size
| Size/SKU | Availability | Price |
|---|---|---|
250 g | Available to ship TODAY | $111.00 |
500 g | Available to ship TODAY | $150.00 |
1 kg | Available to ship TODAY | $276.00 |
3 kg | Estimated to ship onOctober 27, 2026fromMILWAUKEE | $630.00 |
About This Item
$111.00
Available to ship TODAYDetails
agency
meets USP testing specifications
Quality Segment
vapor density
4.9 (vs air)
assay
98.0-100.5% dry basis
form
powder, crystals or chunks
pH
9.0-9.3 (25 °C, 50 g/L)
solubility
water: ~35.8 g/L at 20 °C
density
1.68 g/mL at 25 °C (lit.)
application(s)
pharmaceutical (small molecule)
SMILES string
O.O.O.O.O.O.O.[Na+].[Na+].OP([O-])([O-])=O
InChI
1S/2Na.H3O4P.7H2O/c;;1-5(2,3)4;;;;;;;/h;;(H3,1,2,3,4);7*1H2/q2*+1;;;;;;;;/p-2
InChI key
PYLIXCKOHOHGKQ-UHFFFAOYSA-L
1 of 1
This Item | ||
|---|---|---|
| description meets USP testing specifications | description ACS reagent, 98.0-102.0% | description ≥99.99% trace metals basis |
| assay 98.0-100.5% dry basis | assay 98.0-102.0% | assay ≥99.99% trace metals basis |
| Quality Level 300 | Quality Level 200 | Quality Level 200 |
| form powder, crystals or chunks | form powder | form solid |
| application(s) pharmaceutical (small molecule) | application(s) - | application(s) - |
| solubility water: ~35.8 g/L at 20 °C | solubility - | solubility - |
| pH 9.0-9.3 (25 °C, 50 g/L) | pH 8.7-9.3 (25 °C, 5% in solution) | pH 8.7-9.3 |
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Flash Point (°F)
Not applicable
Flash Point (°C)
Not applicable
PPE (personal protective equipment)
Eyeshields, Gloves, type N95 (US)
Storage Class
11 - Combustible Solids
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How can I determine the shelf life / expiration / retest date of this product?
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How is shipping temperature determined? And how is it related to the product storage temperature?
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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
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