Diantimony trioxide
Also known as: Antimony trioxide, Antimony(III) oxide, EINECS 215-175-0, MFCD00011214, a1530, a1582, antox, ap50, at3, atoxf, atoxs, patoxc, patoxh, patoxl, Antimony (III) oxide
Diantimony trioxide (CAS 1309-64-4) is a compound in the Inorganic Chemicals category listed in the Jingsj chemical database. It has the molecular formula O3Sb2 and a molecular weight of 291.518 g/mol. Key properties include a melting point of 655 °C(lit.), a boiling point of 1550 °C(lit.), a density of 5.20 and a flash point of 1550°C subl.. It is classified under GHS with signal word Warning and hazard statements H351 — Suspected of causing cancer. It is listed by 1 supplier, from 0.19 to 1.80 CNY. Record last updated Aug 21, 2026.
- CAS No.
- 1309-64-4
- Jingsj CID
- J-35889-3
- Molecular Formula
- O3Sb2
- Molecular Weight
- 291.518 g/mol
- Category
- Inorganic Chemicals
- Last updated
- 8/21/2026
| Supplier | Purity / Pack | Base Price | Unit Price | Origin | |
|---|---|---|---|---|---|
In Stock | AR 500g | ¥93.00 | $0.03 /gBest ¥0.19/g CNY | CN China MOQ 500g | |
In Stock | 99.9%，平均粒径：0.7 um 500g | ¥185.00 | $0.06 /g ¥0.37/g CNY | CN China MOQ 500g | |
In Stock | 99.99% 250g | ¥330.00 | $0.2 /g ¥1.32/g CNY | CN China MOQ 250g |
Physicochemical Properties
| Melting Point | 655 °C(lit.) |
|---|---|
| Boiling Point | 1550 °C(lit.) |
| Density | 5.20 |
| Flash Point | 1550°C subl. |
| Exact Mass | 289.792389 |
| PSA | 43.37000 |
| Additional Property | Slightly soluble. |
GHS Safety & Compliance
- H351 — Suspected of causing cancer
Customs & Trade Information
| HS Code | 2825800000 |
|---|
Frequently Asked Questions
What is the CAS number of Diantimony trioxide?
The CAS number of Diantimony trioxide is 1309-64-4.
What are the molecular formula and molecular weight of Diantimony trioxide?
Diantimony trioxide has molecular formula O3Sb2 and molecular weight 291.518 g/mol.
Which suppliers offer Diantimony trioxide?
1 supplier(s) listed; reference unit price ¥0.19–1.80 /g.
Is Diantimony trioxide hazardous?
Diantimony trioxide has GHS signal word Warning and hazard statements H351 — Suspected of causing cancer.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Diantimony trioxide (CAS 1309-64-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-35889-3 (accessed 2026-11-06).
Data for reference only; verify product details with suppliers before purchase.