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
B0394
Ácido bórico
ACS reagent, ≥99.5%
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Nombre del producto
Ácido bórico, ACS reagent, ≥99.5%
InChI key
KGBXLFKZBHKPEV-UHFFFAOYSA-N
InChI
1S/BH3O3/c2-1(3)4/h2-4H
SMILES string
OB(O)O
grade
ACS reagent
agency
suitable for SM 4500 - NH3
suitable for SM 5210
vapor pressure
2.6 mmHg ( 20 °C)
assay
≥99.5%
form
powder
Quality Level
concentration
>99.5%
technique(s)
PCR: suitable
impurities
≤0.005% Insoluble in methanol
≤0.05% Nonvolatile with methanol
pH
5.1 (25 °C, 1.8 g/L)
mp
160 °C (dec.) (lit.)
solubility
water: soluble
density
1.440 g/cm3
anion traces
chloride (Cl-): ≤0.001%
phosphate (PO43-): ≤0.001%
sulfate (SO42-): ≤0.01%
cation traces
Ca: ≤0.005%
Fe: ≤0.001%
heavy metals: ≤0.001% (by ICP)
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Este artículo | 339067 | 202878 | B7901 |
|---|---|---|---|
| grade ACS reagent | grade - | grade - | grade - |
| assay ≥99.5% | assay 99.97% trace metals basis | assay 99.999% trace metals basis | assay ≥99.5% |
| Quality Level 200 | Quality Level 100 | Quality Level 200 | Quality Level 200 |
| agency suitable for SM 4500 - NH3, suitable for SM 5210 | agency suitable for SM 5210 | agency - | agency - |
| form powder | form powder or crystals | form crystalline powder | form powder |
| solubility water: soluble | solubility water: soluble | solubility water: 49.2 g/L at 20 °C | solubility H2O: 40 mg/mL, clear, colorless |
Application
- N-substituted cinnamamides via amidation reaction between cinnamic acid and benzylamines.
- β-Aminoalcohols through the regioselective epoxides ring opening with aromatic amines in the presence of glycerol as a co-catalyst.
- Organosulfur compounds via thia-Michael addition of thiols to α, β-unsaturated compounds.
General description
signalword
Danger
hcodes
Hazard Classifications
Repr. 1B
Clase de almacenamiento
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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This page is intended to make it easier to find the consumables you need based on the analytical method you’re using. Methods included on this page come from the EPA, Standard Methods and ASTM.
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How can I determine the shelf life / expiration / retest date of this product?
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Hello, I am filling out a waste disposal form for an old packet of boric acid, and need to know what trace chemicals may configure the remaining <1% in order to complete the form.
1 answer-
Impurities that are tested are listed in the product's Specification Sheet.
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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
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What is the maximum solubility in water of the product B0394-100G (boric acid)?
1 answer-
The maximum solubility in water is not tested as a quality specification for item B0394.
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Hello, at what temperature should we store the boric acid powder (B0394-100G) ? Do we need a ventilated place to store it ? Also for how long can we keep it ?
1 answer-
This product is not issued a recommended retest or expiration date and may be stored indefinitely. The material is moisture sensitive and recommended to be stored tightly closed and dry in a well-ventilated place.
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