Hydroxylamine-O-sulfonic acid
Also known as: Amino hydrogen sulfate, Hydroxylamine sulfonic acid, HOSA, HAOS, O-Hydroxylaminesulfonic acid, Sulfamic acid N-oxide, Permonosulfamic acid, Aminomonopersulfuric acid, Amidosulfonic peracid, Sulfoperamidic acid, Hydroxylamino-O-sulfonic acid, o-Hydroxylammoniumsulfonate, (Aminooxy)(hydroxy)sulfane dioxide, MFCD00011604
Hydroxylamine-O-sulfonic acid (CAS 2950-43-8) is a compound in the Inorganic Chemicals category listed in the Jingsj chemical database. It has the molecular formula H3NO4S and a molecular weight of 113.093 g/mol. Key properties include a melting point of 210 °C (dec.)(lit.) and a density of 2.0±0.1 g/cm3. It is classified under GHS with signal word Danger and hazard statements H314 — Causes severe skin burns and eye damage. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 2950-43-8
- Jingsj CID
- J-3617-9
- Molecular Formula
- H3NO4S
- Molecular Weight
- 113.093 g/mol
- Category
- Inorganic Chemicals
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 210 °C (dec.)(lit.) |
|---|---|
| Density | 2.0±0.1 g/cm3 |
| Exact Mass | 112.978279 |
| PSA | 98.00000 |
| LogP | -0.96 |
| Refractive Index | 1.534 |
| Additional Property | soluble |
GHS Safety & Compliance
- H314 — Causes severe skin burns and eye damage
Customs & Trade Information
| HS Code | 2922199090 |
|---|---|
| Summary | 2922199090. other amino-alcohols, other than those containing more than one kind of oxygen function, their ethers and esters; salts thereof. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of Hydroxylamine-O-sulfonic acid?
The CAS number of Hydroxylamine-O-sulfonic acid is 2950-43-8.
What are the molecular formula and molecular weight of Hydroxylamine-O-sulfonic acid?
Hydroxylamine-O-sulfonic acid has molecular formula H3NO4S and molecular weight 113.093 g/mol.
Is Hydroxylamine-O-sulfonic acid hazardous?
Hydroxylamine-O-sulfonic acid has GHS signal word Danger and hazard statements H314 — Causes severe skin burns and eye damage.
What are the upstream and downstream products of Hydroxylamine-O-sulfonic acid?
For Hydroxylamine-O-sulfonic acid, Upstream Products: Sulfur trioxide, Hydroxylamine, Chlorosulfonic acid; Downstream Products: 2-(4-Chlorophenyl)propan-1-amine hydrochloride, 1H-Indol-1-amine, 2-Methylindolin-1-amine.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "Hydroxylamine-O-sulfonic acid (CAS 2950-43-8)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-3617-9 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.