Skip to Content
MilliporeSigma

202878

Sigma-Aldrich

Boric acid

99.999% trace metals basis

Synonym(s):

orthoboric acid

Slide 1 of 3
Sign Into View Organizational & Contract Pricing

Select a Size

10 G
$44.17
50 G
$125.40
250 G
$458.00

$44.17

List Price$46.50Save 5%
Web-Only Promotion

In StockDetails


Request a Bulk Order

Select a Size

Change View
10 G
$44.17
50 G
$125.40
250 G
$458.00

About This Item

Linear Formula:
H3BO3
CAS Number:
Molecular Weight:
61.83
EC Number:
MDL number:
UNSPSC Code:
12352300
PubChem Substance ID:
NACRES:
NA.23

Skip To

Technical Service
Need help? Our team of experienced scientists is here for you.
Let Us Assist

$44.17

List Price$46.50Save 5%
Web-Only Promotion

In StockDetails


Request a Bulk Order
Technical Service
Need help? Our team of experienced scientists is here for you.
Let Us Assist

vapor pressure

2.6 mmHg ( 20 °C)

assay

99.999% trace metals basis

form

crystalline powder

mp

160 °C (dec.) (lit.)

solubility

water: 49.2 g/L at 20 °C

density

1.49 g/cm3 at 23 °C

SMILES string

OB(O)O

InChI

1S/BH3O3/c2-1(3)4/h2-4H

InChI key

KGBXLFKZBHKPEV-UHFFFAOYSA-N

Looking for similar products? Visit Product Comparison Guide

Compare Similar Items

View Full Comparison

Show Differences

1 of 4

This Item
B0394B0252B6768
Boric acid ACS reagent, ≥99.5%

B0394

Boric acid

Boric acid ReagentPlus®, ≥99.5%

B0252

Boric acid

Boric acid BioReagent, Molecular Biology, suitable for cell culture, suitable for plant cell culture, ≥99.5%

B6768

Boric acid

assay

99.999% trace metals basis

assay

≥99.5%

assay

≥99.5%

assay

≥99.5%

Quality Level

200

Quality Level

200

Quality Level

200

Quality Level

200

form

crystalline powder

form

powder

form

powder

form

powder

solubility

water: 49.2 g/L at 20 °C

solubility

water: soluble

solubility

water: 40 mg/mL, clear, colorless

solubility

water: 40 mg/mL, clear, colorless

mp

160 °C (dec.) (lit.)

mp

160 °C (dec.) (lit.)

mp

160 °C (dec.) (lit.)

mp

160 °C (dec.) (lit.)

vapor pressure

2.6 mmHg ( 20 °C)

vapor pressure

2.6 mmHg ( 20 °C)

vapor pressure

2.6 mmHg ( 20 °C)

vapor pressure

2.6 mmHg ( 20 °C)

General description

Boric acid is a weak monobasic acid, it accepts OH- ions, hence is a Lewis acid. In boric acid, B is sp2 hybridized, forming a planar triangle structure.The principal oxide of boron, B2O3, is obtained as a vitreous solid by dehydration of boric acid at red heat.

Application

Boric acid can have a large scale use in glass industry as flame retardant, in buffer solutions.
Boric acid finds uses in several areas; such as


  • In glass fibres, to enhance its resistance and color
  • In glazing ceramic wares
  • As a condensing agent, chemical intermediate and as a precursor for preparation of borates and other boron based compounds
  • As a water coolant in nuclear reactors
  • In electrolytic condensers and capacitors 1

Packaging

Packaged in poly bottles

pictograms

Health hazard

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_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type P3 (EN 143) respirator cartridges


Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number

Don't see the Right Version?

If you require a particular version, you can look up a specific certificate by the Lot or Batch number.

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Questions

1–2 of 2 Questions  
  1. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer
    1. 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

      Helpful?

  2. How can I determine the shelf life / expiration / retest date of this product?

    1 answer
    1. 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/449/386/product-dating-information-mk.pdf

      Helpful?

Reviews

No rating value

Active Filters

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service