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
1.00165
Boric acid
for analysis EMSURE® ACS,ISO,Reag. Ph Eur
Synonym(s):
Orthoboric acid, Trihydroxidoboron
About This Item
Recommended Products
grade
ACS reagent
Quality Level
agency
reag. ISO
reag. Ph. Eur.
suitable for SM 4500 - NH3
suitable for SM 5210
vapor pressure
2.6 mmHg ( 20 °C)
product line
EMSURE®
assay
99.5-100.5% (alkalimetric)
form
solid
potency
2660 mg/kg LD50, oral (Rat)
>2000 mg/kg LD50, skin (Rat)
impurities
≤0.005% In methanol insoluble matter
≤0.05% Nonvolatile with methanol
pH
3.8-4.8 (20 °C, 33 g/L in H2O)
mp
160 °C (dec.) (lit.)
solubility
49.2 g/L
density
1.489 g/cm3 at 23 °C
bulk density
400‑600 kg/m3
anion traces
chloride (Cl-): ≤0.0003%
phosphate (PO43-): ≤0.0005%
sulfate (SO42-): ≤0.0005%
cation traces
Ca: ≤0.002%
Fe: ≤0.0001%
Pb: ≤0.001%
heavy metals (as Pb): ≤0.0005%
storage temp.
2-30°C
SMILES string
OB(O)O
InChI
1S/BH3O3/c2-1(3)4/h2-4H
InChI key
KGBXLFKZBHKPEV-UHFFFAOYSA-N
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General description
Application
- For the determination of the protein content of yogurt samples.
- In the proximate analysis of seaweed Caulerpa sp. samples.
Features and Benefits
- Most extensive specifications worldwide
- Tested for up to 70 parameters
- Extraordinary purity
- Very low limiting values
- Greater accuracy and control of analyses
- Optimized for highly critical and demanding analyses
- Ideal for method development
- No interference or contamination due to unknown impurities
Analysis Note
Identity: passes test
Appearance of solution: passes test
pH-value (3.3 %, water): 3.8 - 4.8
Chloride (Cl): ≤ 0.0003 %
Phosphate (PO₄): ≤ 0.0005 %
Sulfate (SO₄): ≤ 0.0005 %
Solubility in ethanol: passes test
In methanol insoluble matter: ≤ 0.005 %
Heavy metals (as Pb): ≤ 0.0005 %
Ca (Calcium): ≤ 0.002 %
Fe (Iron): ≤ 0.0001 %
Pb (Lead): ≤ 0.001 %
Organic impurities: passes test
Nonvolatile with methanol: ≤ 0.05 %
Corresponds to ACS,ISO,Reag. Ph Eur
Legal Information
signalword
Danger
hcodes
Hazard Classifications
Repr. 1B
Storage Class
6.1D - Non-combustible acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects
wgk_germany
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
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