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
31146
Boric acid
puriss. p.a., ACS reagent, reag. ISO, reag. Ph. Eur., buffer substance, ≥99.8%
Select a Size
| Size/SKU | Availability | Price |
|---|---|---|
500 g | Available to ship TODAYfromMILWAUKEE | $208.00 |
1 kg | Available to ship TODAYfromMILWAUKEE | $231.00 |
6 x 500 g | Estimated to ship onJune 23, 2026fromMILWAUKEE | $435.00 |
2.5 kg | Available to ship TODAYfromMILWAUKEE | $464.00 |
About This Item
$208.00
Available to ship TODAYDetails
Quality Segment
agency
USP/NF, reag. ISO, reag. Ph. Eur.
vapor pressure
2.6 mmHg ( 20 °C)
grade
ACS reagent, puriss. p.a.
assay
≥99.8%
form
powder or crystals
impurities
≤0.005% insoluble in methanol, ≤0.05% with methanol-HCl non-volat. matter
pH
3.6-4.0 (20 °C, 4%)
mp
160 °C (dec.) (lit.)
solubility
water: soluble
density
1.440 g/cm3
anion traces
chloride (Cl-): ≤3 mg/kg, phosphate (PO43-): ≤5 mg/kg, sulfate (SO42-): ≤5 mg/kg
cation traces
As: ≤5 mg/kg, Ca: ≤10 mg/kg, Cd: ≤5 mg/kg, Cu: ≤5 mg/kg, Fe: ≤1 mg/kg, Mg: ≤5 mg/kg, Pb: ≤5 mg/kg, Zn: ≤5 mg/kg
SMILES string
OB(O)O
InChI
1S/BH3O3/c2-1(3)4/h2-4H
InChI key
KGBXLFKZBHKPEV-UHFFFAOYSA-N
General description
Application
1 of 1
This Item | |||
|---|---|---|---|
| grade ACS reagent, puriss. p.a. | grade ACS reagent | grade Molecular Biology | grade - |
| assay ≥99.8% | assay ≥99.5% | assay ≥99.5% | assay ≥99.5% |
| Quality Level 200 | Quality Level 200 | Quality Level 200 | Quality Level 200 |
| agency USP/NF, reag. Ph. Eur., reag. ISO | agency suitable for SM 4500 - NH3, suitable for SM 5210 | agency - | agency suitable for SM 4500 - NH3, suitable for SM 5210 |
| form powder or crystals | form powder | form powder | form powder |
| solubility water: soluble | solubility water: soluble | solubility water: 40 mg/mL, clear, colorless | solubility water: 40 mg/mL, clear, colorless |
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signalword
Danger
hcodes
Hazard Classifications
Repr. 1B
Storage Class
6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects
wgk
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
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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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