Information regarding the effect of this product on filters is not available.
1.06308
di-Sodium tetraborate decahydrate
for analysis ACS,ISO,Reag. Ph Eur
Synonym(s):
di-Sodium tetraborate decahydrate, Borax, Sodium biborate decahydrate, Sodium borate decahydrate
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About This Item
Empirical Formula (Hill Notation):
B4Na2O7 · 10H2O
CAS Number:
Molecular Weight:
381.37
UNSPSC Code:
12352302
EC Index Number:
215-540-4
NACRES:
NB.21
MDL number:
Pricing and availability is not currently available.
grade
ACS reagent
Quality Segment
agency
reag. ISO, reag. Ph. Eur.
vapor pressure
0.213 hPa ( 20 °C)
assay
99.5-103.0% (acidimetric)
form
crystals
potency
2660 mg/kg LD50, oral (Rat), >2000 mg/kg LD50, skin (Rabbit)
pH
9.2 (20 °C, 47 g/L in H2O)
mp
75 °C (Elimination of water of crystallisation)
solubility
49.74 g/L
density
1.72 g/cm3 at 20 °C
bulk density
750 kg/m3
storage temp.
2-30°C
SMILES string
[Na+].[Na+].B([O-])(OB([O-])OB=O)OB=O.O.O.O.O.O.O.O.O.O.O
InChI
1S/B4O7.2Na.10H2O/c5-1-9-3(7)11-4(8)10-2-6;;;;;;;;;;;;/h;;;10*1H2/q-2;2*+1;;;;;;;;;;
InChI key
OJPFLODMGUZMKD-UHFFFAOYSA-N
Application
- Inhibition of boric acid and sodium borate on the biological activity of microorganisms in an aerobic biofilter.: This research examines the effects of di-sodium tetraborate decahydrate on the biological activity of microorganisms in an aerobic biofilter. The study finds that di-sodium tetraborate decahydrate can inhibit microbial activity, which has significant implications for waste treatment and environmental management. This inhibition property can be utilized to control microbial populations in various industrial processes, enhancing the efficiency and effectiveness of biofiltration systems (Gunes, 2013).
Analysis Note
Assay (acidimetric): 99.5 - 103.0 %
Identity: passes test
Appearance of solution: passes test
Insoluble matter: ≤ 0.005 %
pH-value (0.01 M Solution, 25 °C): 9.15 - 9.20
pH-value (4 %, water): 9.0 - 9.6
Chloride (Cl): ≤ 0.0007 %
Phosphate (PO₄): ≤ 0.001 %
Sulfate (SO₄): ≤ 0.005 %
Heavy metals (as Pb): ≤ 0.001 %
As (Arsenic): ≤ 0.0005 %
Ca (Calcium): ≤ 0.005 %
Cu (Copper): ≤ 0.0005 %
Fe (Iron): ≤ 0.0005 %
NH₄ (Ammonium): ≤ 0.001 %
Pb (Lead): ≤ 0.0005 %
Corresponds to ACS,ISO,Reag. Ph Eur
Identity: passes test
Appearance of solution: passes test
Insoluble matter: ≤ 0.005 %
pH-value (0.01 M Solution, 25 °C): 9.15 - 9.20
pH-value (4 %, water): 9.0 - 9.6
Chloride (Cl): ≤ 0.0007 %
Phosphate (PO₄): ≤ 0.001 %
Sulfate (SO₄): ≤ 0.005 %
Heavy metals (as Pb): ≤ 0.001 %
As (Arsenic): ≤ 0.0005 %
Ca (Calcium): ≤ 0.005 %
Cu (Copper): ≤ 0.0005 %
Fe (Iron): ≤ 0.0005 %
NH₄ (Ammonium): ≤ 0.001 %
Pb (Lead): ≤ 0.0005 %
Corresponds to ACS,ISO,Reag. Ph Eur
1 of 1
This Item | |||
|---|---|---|---|
| grade ACS reagent | grade - | grade certified reference material | grade - |
| assay 99.5-103.0% (acidimetric) | assay 99.0-103.0% (acidimetric) | assay - | assay 99.0-103.0% |
| Quality Level 100 | Quality Level 500 | Quality Level 300 | Quality Level 200 |
| form crystals | form solid | form - | form crystalline |
| pH 9.2 (20 °C, 47 g/L in H2O) | pH 9.2 (20 °C, 47 g/L in H2O) | pH 9.2 (20 °C, 47 g/L in H2O) | pH 9.0-9.6 (20 °C, 5%) |
| storage temp. 2-30°C | storage temp. 2-30°C | storage temp. 15-25°C | storage temp. room temp |
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Danger
Hazard Classifications
Eye Irrit. 2 - Repr. 1B
wgk
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
hcodes
Storage Class
6.1D - Non-combustible acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects
Certificates of Analysis (COA)
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We are filtering the buffer trough 0.22 micrometers filters following the preparation of 10 mM buffer at pH 8.2 by reaching the pH by adding 1.5 mL of 37% HCL. We are experiencing the formation of orange spots on the filter and the HPLC frit.
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How can I determine the shelf life / expiration / retest date of this product?
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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.pdfHelpful?
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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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