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Boronic Acids & Esters

Bis(pinacolato)diboron, 99%

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Order Bis(pinacolato)diboron, 99% (CAS 73183-34-3) online at Zemixal. Request a quote with price, lead time and documents.

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Bis(pinacolato)diboron, 99% chemical structure
CAS number73183-34-3
FormulaC12H24B2O4
Molar mass253.9 g/mol
Physical formCrystalline
HS code29239000
Purity99%
InChIKeyIPWKHHSGDUIRAH-UHFFFAOYSA-N
IUPAC name4,4,5,5-tetramethyl-2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1,3,2-dioxaborolane

About Bis(pinacolato)diboron, 99%

Researchers and plant chemists source Bis(pinacolato)diboron, 99% from Zemixal for routine and specialised work. Identity at a glance (99%): CAS 73183-34-3, formula C12H24B2O4 and molar mass 253.9 g/mol. Expect white to almost white powder or crystals or chunks.

Use cases we see most often

  • Catalysis
  • Protein & peptide research
  • Enzyme inhibition studies

Storage and safety notes

Store at 2–8 °C. Reported physical data: melting point 135-142 °C. Hazard communication follows GHS (Danger: H302, H314, H315 and H317). Our SDS lists exposure controls and first-aid measures.

Order it in 1 g, 5 g, 25 g, 100 g and 500 g packs or ask for a bulk quotation. Each lot travels with a batch certificate of analysis and a 16-section SDS. Add it to your quote list and our team replies with price, lead time and shipping options within one business day.

Typical uses

  • Catalysis
  • Protein & peptide research
  • Enzyme inhibition studies

Applications

Specifications and identifiers

Specifications of Bis(pinacolato)diboron, 99%
Product nameBis(pinacolato)diboron, 99%
Catalogue numberZX-010120
CAS number73183-34-3
IUPAC name4,4,5,5-tetramethyl-2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1,3,2-dioxaborolane
Molecular formulaC12H24B2O4
Molar mass253.9 g/mol
Exact mass254.1861
Purity / assay99%
Physical formCrystalline
AppearanceWhite to almost white powder or crystals or chunks
Melting point135-142 °C
H-bond donors / acceptors0 / 4
Topological polar surface area36.9 Ų
Storage2–8 °C
HS code29239000
InChIKeyIPWKHHSGDUIRAH-UHFFFAOYSA-N
SMILESB1(OC(C(O1)(C)C)(C)C)B2OC(C(O2)(C)C)(C)C
PubChem CID2733548
Synonyms4,4,4',4',5,5,5',5'-Octamethyl-2,2'-bi-1,3,2-dioxaborolane, bis(pinacolato)diborane, Pinacol diborane, B2Pin2, Diboron pinacol ester, Miyaura's reagent, 2,2'-Bi-1,3,2-dioxaborolane, 4,4,4',4',5,5,5',5'-octamethyl-, B(P)DB, 4,4,4',4',5,5,5',5'-Octamethyl-2,2'-bi(1,3,2-dioxaborolane), 4,4,5,5-tetramethyl-2-(tetramethyl-1,3,2-dioxaborolan-2-yl)-1,3,2-dioxaborolane, dipinacol-diboron, bis(pinacolate)diboron

Lot values are stated on the batch certificate of analysis. Ask for a typical COA with your quotation.

Safety and GHS hazards

GHS05 Corrosive
Corrosive
GHS07 Irritant or harmful
Irritant or harmful

Signal word Danger

  • H302Harmful if swallowed
  • H314Causes severe skin burns and eye damage
  • H315Causes skin irritation
  • H317May cause an allergic skin reaction
  • H319Causes serious eye irritation
  • H332Harmful if inhaled
  • H335May cause respiratory irritation

Precautionary statements P260, P261, P264, P264 + P265, P270, P271, P272, P280, P301 + P317, P301 + P330 + P331, P302 + P352, P302 + P361 + P354, P304 + P340, P305 + P351 + P338, P305 + P354 + P338, P316, P317, P319, P321, P330, P332 + P317, P333 + P317, P337 + P317, P362 + P364

Classification summarised from public GHS notifications. It can vary with grade and concentration, so always follow the SDS supplied with your lot.

Pack sizes

Pack sizes of Bis(pinacolato)diboron, 99%
1 gQuoted on request
5 gQuoted on request
25 gQuoted on request
100 gQuoted on request
500 gQuoted on request

Need a different size? Bulk drums and custom packing are quoted on request through the quote form on this page.

Questions about Bis(pinacolato)diboron, 99%

Which CAS number identifies Bis(pinacolato)diboron, 99%?
Bis(pinacolato)diboron, 99% is registered under CAS 73183-34-3. You may also see it listed as 4,4,4',4',5,5,5',5'-Octamethyl-2,2'-bi-1,3,2-dioxaborolane, bis(pinacolato)diborane, Pinacol diborane. Our catalogue number for this item is ZX-010120.
What are the formula and molar mass of Bis(pinacolato)diboron, 99%?
For Bis(pinacolato)diboron, 99%, its formula is C12H24B2O4 and its molar mass is 253.9 g/mol. The systematic (IUPAC) name is 4,4,5,5-tetramethyl-2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1,3,2-dioxaborolane. InChIKey IPWKHHSGDUIRAH-UHFFFAOYSA-N lets you match it in any structure database.
What grade and pack sizes are available for Bis(pinacolato)diboron, 99%?
This listing is 99% purity. Standard packs are 1 g, 5 g, 25 g, 100 g, 500 g. Larger quantities and custom packing can be quoted on request.
Which documents come with Bis(pinacolato)diboron, 99%?
Each lot ships with a batch certificate of analysis and a 16-section GHS safety data sheet. A typical COA or specification sheet can be shared with the quotation before you order.
Can Zemixal ship Bis(pinacolato)diboron, 99% to my country?
Yes. Because Bis(pinacolato)diboron, 99% is classed as hazardous, it travels in UN-approved packaging as dangerous goods under IATA or IMDG rules, with the export paperwork your broker needs.
How do I store Bis(pinacolato)diboron, 99%?
2–8 °C. Keep the container closed and follow the handling advice in the SDS.

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