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
32318
Sodium acetate trihydrate
puriss. p.a., ACS reagent, reag. ISO, reag. Ph. Eur., ≥99.5%
Synonym(s):
Acetic acid sodium salt trihydrate
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About This Item
Quality Segment
agency
USP/NF, reag. ISO, reag. Ph. Eur.
grade
ACS reagent, puriss. p.a.
assay
≥99.5%
form
crystalline
autoignition temp.
1112 °F
greener alternative product characteristics
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sustainability
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impurities
≤0.0005% heavy metals (as Pb), ≤0.005% KMnO4 red. matter (as HCOOH), ≤0.005% in water soluble matter
loss
39.0-40.5% loss on drying, 130 °C
pH
7.5-9.0 (20 °C, 5%)
anion traces
chloride (Cl-): ≤0.001%, phosphate (PO43-): ≤5 mg/kg, sulfate (SO42-): ≤20 mg/kg
cation traces
Al: ≤0.2 mg/kg, As: ≤2 mg/kg, Ca: ≤10 mg/kg, Cd: ≤5 mg/kg, Cu: ≤5 mg/kg, Fe: ≤5 mg/kg, K: ≤50 mg/kg, Mg: ≤5 mg/kg, Pb: ≤5 mg/kg, Zn: ≤5 mg/kg
suitability
in accordance for appearance of solution
greener alternative category
SMILES string
O.O.O.[Na+].CC([O-])=O
InChI
1S/C2H4O2.Na.3H2O/c1-2(3)4;;;;/h1H3,(H,3,4);;3*1H2/q;+1;;;/p-1
InChI key
AYRVGWHSXIMRAB-UHFFFAOYSA-M
General description
Application
Other Notes
1 of 1
This Item | |||
|---|---|---|---|
| assay ≥99.5% | assay 99.0-101.0% (calc. to the dried substance) | assay ≥99% | assay ≥99.9% trace metals basis |
| grade ACS reagent, puriss. p.a. | grade - | grade ACS reagent | grade - |
| form crystalline | form powder or crystals | form crystals or chunks | form powder or crystals (or granules) |
| pH 7.5-9.0 (20 °C, 5%) | pH 7.5-9.0 (20 °C, 5%) | pH 7.5-9.2 (25 °C, 5%) | pH - |
| anion traces chloride (Cl-): ≤0.001%, sulfate (SO42-): ≤20 mg/kg, phosphate (PO43-): ≤5 mg/kg | anion traces chloride (Cl-): ≤50 mg/kg, sulfate (SO42-): ≤50 mg/kg | anion traces chloride (Cl-): ≤0.001%, phosphate (PO43-): ≤5 ppm, sulfate (SO42-): ≤0.002% | anion traces - |
| cation traces As: ≤2 mg/kg, Cd: ≤5 mg/kg, Fe: ≤5 mg/kg, Mg: ≤5 mg/kg, Zn: ≤5 mg/kg, Al: ≤0.2 mg/kg, Cu: ≤5 mg/kg, Pb: ≤5 mg/kg, Ca: ≤10 mg/kg, K: ≤50 mg/kg | cation traces Al: ≤0.2 mg/kg, As: ≤2 mg/kg, Ca: ≤20 mg/kg, Cu: ≤10 mg/kg, Fe: ≤10 mg/kg, Hg: ≤1 mg/kg, K: ≤200 mg/kg, Mg: ≤20 mg/kg, Pb: ≤2 mg/kg, Zn: ≤10 mg/kg | cation traces Ca: ≤0.005%, Fe: ≤5 ppm, K: ≤0.005%, Mg: ≤0.002%, heavy metals (as Pb): ≤5 ppm | cation traces - |
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Storage Class
11 - Combustible Solids
wgk
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
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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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