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CAS 1303-86-2 Boron oxide molecular structure lightbox
CAS RN: 1303-86-2

Boron oxide

Product Availability

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8 package records8 with current stock2 grade groups
Batch No.PackageAvailabilityWarehouseInquiry
Batchno.20250720 100g In stock Shanghai, Shenzhen, Tianjin, Wuhan Inquiry
Batchno.20250825 1kg In stock Shanghai, Shenzhen, Wuhan Inquiry
Batchno.20260111 25g In stock Shanghai, Shenzhen, Tianjin, Wuhan Inquiry
Batchno.20251223 500g In stock Shanghai, Shenzhen, Tianjin Inquiry
Batch No.PackageAvailabilityWarehouseInquiry
Batchno.20251202 100g In stock Inquiry
Batchno.20250426 25g In stock Inquiry
Batchno.20250704 500g In stock Inquiry
Batchno.20250917 5g In stock Inquiry
  • Product code: SSC-036918
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Historical Factory Record

Historical Supply Reference

This product has historical factory records. Recorded pack sizes and purity can be used as a supply reference, while project-specific availability is confirmed by inquiry.

  • Pack sizes on record: 500g
  • Available purity: ≥97%
  • Inventory rows with stock: 0
  • Bulk packaging: confirmed by inquiry
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Reference Pack Sizes

Reference pack sizes are shown below. Final availability, packaging and delivery schedule are confirmed by inquiry.

Recorded sizes, purity and stock details for CAS 1303-86-2
Pack Size Recorded Purity Available Qty Ship From Inquiry
500g ≥97% 0 Out of Stock Shanghai Inquiry

1303-86-2 / 2,4,5-trioxa-1,3-diborabicyclo[1.1.1]pentane

Standard CAS: 1303-86-2 Multi CAS: No
Basic Information Physical Properties Computed Properties Safety & Transport

Basic Information

CAS
1303-86-2
Multi CAS
No
Molecular Formula
B2O3
Molecular Weight
69.630000
Exact Mass
70.003354
SMILES
B12OB(O1)O2
InChI
InChI=1S/B2O3/c3-1-4-2(3)5-1
InChIKey
RPPTVYMVSNHGRG-UHFFFAOYSA-N

Physical Properties

Melting Point
842 °F (NIOSH, 2024) 450 °C (crystal) 450 °C 842 °F
Boiling Point
3380 °F at 760 mmHg (NIOSH, 2024) 1500 °C (crystal) ~1860 °C 3380 °F
Density
2.46 (NIOSH, 2024) - Denser than water; will sink 1.8 g/cu cm (amorphous); 2.46 g/cu cm (crystal) Relative density (water = 1): 2.46 (cryst) 2.46
Physical Description
Boron oxide appears as colorless, semi-transparent glassy lumps or hard white odorless crystals. Mp 450 °C; bp: 1860 °C. Density: 2.46 g cm-3. Moderately soluble in water. Used as an insecticide; as the starting material for the synthesis of other boron compounds; as a fluxing agent in enamels and glasses; and in mixture with 2-6% boron nitride, as a bonding agent in the hot isostatic pressing of boron nitride ceramics. Other Solid; Dry Powder; Pellets or Large Crystals; Dry Powder, Pellets or Large Crystals Colorless, semitransparent lumps or hard, white, odorless crystals; [NIOSH] WHITE HYGROSCOPIC POWDER OR GRANULES Colorless, semitransparent lumps or hard, white, odorless crystals.
Appearance
Colorless, brittle, vitreous, semitransparent lumps or hard, white crystals Colorless, glassy or hexagonal crystals, hygroscopic Colorless powder or vitreous crystals
State
Solid

Computed Properties

Structural Parameters

Heavy atom count
5
H-bond acceptors
3
Molar refractivity
14.76
TPSA
27.69

LogP / Solubility

WLOGP
-0.97
MLOGP
-0.87
XLogP3
-0.97
Consensus LogP
-0.94
Log S (ESOL)
0.34
Class (ESOL)
Highly soluble
Log S (Ali)
0.57
Class (Ali)
Highly soluble
Log S (SILICOS-IT)
0.69
Class (SILICOS-IT)
Highly soluble

ADME

GI absorption
Low
BBB permeant
Yes
P-gp substrate
No
CYP1A2 inhibitor
No
CYP2C19 inhibitor
No
CYP2C9 inhibitor
No
CYP2D6 inhibitor
No
CYP3A4 inhibitor
No
Log Kp (skin permeation)
-3.83

Drug-likeness / Medicinal Chemistry

Lipinski
Yes
Ghose
No
Veber
Yes
Egan
Yes
Muegge
No
Bioavailability score
0.55
Brenk alerts
1
Leadlikeness
No
Synthetic Accessibility
3

Safety & Transport

Pictogram(s)
Health Hazard Irritant
Signal
Danger Warning
GHS Hazard Statements
H360FD: May damage fertility; May damage the unborn child [Danger Reproductive toxicity] H360 (95.1%): May damage fertility or the unborn child [Danger Reproductive toxicity] H360FD (13.1%): May damage fertility; May damage the unborn child [Danger Reproductive toxicity] H319: Causes serious eye irritation [Warning Serious eye damage/eye irritation] H335: May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]
Precautionary Statement Codes
P203, P280, P318, P405, and P501 P203, P261, P264+P265, P271, P280, P304+P340, P305+P351+P338, P318, P319, P337+P317, P403+P233, P405, and P501 P261, P264+P265, P271, P280, P301+P317, P304+P340, P305+P351+P338, P319, P332+P317, P337+P317, P403+P233, P405, and P501

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