Molekula
Barium oxide
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Barium oxide (BaO) is a highly reactive alkaline earth metal oxide used in ceramics, glass manufacturing, and as a drying agent for organic liquids. It serves as a precursor in barium compound synthesis and functions as a strong desiccant in laboratory settings. This white to yellowish powder has a CAS number of 1304-28-5, a molecular weight of 153.33 g/mol, and requires careful handling due to its corrosive and hygroscopic properties. It must be stored in a tightly sealed container under ambient conditions, away from moisture and carbon dioxide. The substance carries a **Danger** signal word, indicating severe hazards upon exposure. Molekula supplies barium oxide from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
Pack sizes & pricing
Pricing on request — packs available from research to bulk quantities.
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Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | White or off-white crystalline powder |
| Heavy metals | ≤0.005% |
| Chloride (Cl-) | ≤0.01% |
| Assay | ≥97.0% |
| HCl Insoluble Matter | ≤0.5% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Transport Class | 6.1 |
| Packing Group | III |
| Acidity | Base |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Melting Point | 1923 °C |
Source: PubChem CID 62392 (ICSC)
Identification
| Property | Value |
|---|---|
| SKU | 40251474 |
| CAS Number | 1304-28-5 |
| IUPAC Name | oxobarium |
| EC Number | 215-127-9 |
| Molecular Formula | BaO |
| Molecular Weight | 153.33 |
| Exact Mass | 153.9002 |
| SMILES | O=[Ba] |
| InChIKey | QVQLCTNNEUAWMS-UHFFFAOYSA-N |
| InChI | InChI=1S/Ba.O |
| PubChem CID | 62392 |
| UN Number | UN1884 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 28164020 |
| Tariff Code | 2816400090 |
Safety & GHS
-
Corrosive
GHS05
-
Toxic
GHS06
Hazard statements
- H301 Toxic if swallowed
- H314 (sub cat. 1B) Causes severe skin burns and eye damage
- H332 Harmful if inhaled
Precautionary statements
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+310 IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician
- P303+361 IF ON SKIN (or hair): Remove immediately all contaminated clothing. Rinse with water/shower
Documents
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- Baria
- Barium monoixde
- Barium monoxide
- Barium oxide (BaO)
- Barium oxide, obtained by calcining witherite
- Barium protoxide
- Baryta
- Calcined baryta
- oxobarium
- Oxyde de baryum
Frequently asked questions
What is barium oxide commonly used for?
Barium oxide is primarily used in ceramics and glass manufacturing, as a getter in vacuum tubes, and in the production of barium chemicals like barium peroxide.
What is the chemical formula and molecular weight of barium oxide?
The chemical formula is **BaO**, and the molecular weight is **153.33 g/mol**.
How should barium oxide be stored?
Store barium oxide in a tightly sealed container at **ambient temperature**, away from moisture and carbon dioxide.
What grades or purities of barium oxide does Molekula supply?
Molekula supplies **technical and reagent-grade barium oxide**, with purity levels typically ≥98%.
Can Molekula supply barium oxide in bulk quantities?
Yes, Molekula can provide barium oxide in **bulk quantities** upon request, subject to availability and order specifications.
What documentation comes with a barium oxide order?
Each order includes a **Certificate of Analysis (CoA)**, Safety Data Sheet (SDS), and a **Material Safety and Compliance Statement**.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.