Molekula
Hydroxylamine-O-sulfonic acid
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
Hydroxylamine-O-sulfonic acid is a reactive inorganic compound used in organic synthesis, particularly in the preparation of hydroxylamine derivatives and as a reducing agent. It is a white crystalline solid with the molecular formula H2NOSO3H and a molecular weight of 113.09 g/mol. It must be stored at 2 to 8 °C and is classified as dangerous. Molekula supplies Hydroxylamine-O-sulfonic acid 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
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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100 g — £61.80 per pack ex VAT · £74.16 inc. VAT
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200 g — £115.00 per pack ex VAT · £138.00 inc. VAT
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | Off-white crystalline powder |
| Water | ≤0.5% |
| Assay | ≥97.0% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | 2 to 8 °C |
| Transport Class | 8 |
| Packing Group | II |
| Acidity | Acid |
Identification
| Property | Value |
|---|---|
| SKU | 77461217 |
| CAS Number | 2950-43-8 |
| IUPAC Name | amino hydrogen sulfate |
| EC Number | 220-971-6 |
| Molecular Formula | H2NOSO3H |
| Molecular Weight | 113.09 |
| Exact Mass | 112.9783 |
| SMILES | NOS(=O)(=O)O |
| InChIKey | DQPBABKTKYNPMH-UHFFFAOYSA-N |
| InChI | InChI=1S/H3NO4S/c1-5-6(2,3)4/h1H2,(H,2,3,4) |
| PubChem CID | 76284 |
| UN Number | UN3260 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 28111961 |
| Tariff Code | 2811198090 |
Safety & GHS
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Corrosive
GHS05
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Health Hazard
GHS07
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Hazardous to the Environment
GHS09
Hazard statements
- H290 May be corrosive to metals
- H302 Harmful if swallowed
- H314 Causes severe skin burns and eye damage
- H317 May cause an allergic skin reaction
- H351 Suspected of causing cancer
- H400 Very toxic to aquatic life
Precautionary statements
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P273 Avoid release to the environment
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+312 IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell
- P303+361 IF ON SKIN (or hair): Remove immediately all contaminated clothing. Rinse with water/shower
- P304+340 IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
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
- Amidoperoxymonosulfuric acid
- Amidosulfonic peracid
- Aminomonopersulfuric acid
- HAOS
- Hydroxylamine-O-sulphonic acid
- Hydroxylaminesulfonic acid
- Permonosulfamic acid
- Sulfamic acid N-oxide
- Sulfoperamidic acid
- Sulfuric acid, monoazanyl ester
Frequently asked questions
What is Hydroxylamine-O-sulfonic acid used for?
It is primarily used as a reducing agent in organic synthesis and as a reagent in the production of dyes and pharmaceuticals.
What is the chemical formula and molecular weight of Hydroxylamine-O-sulfonic acid?
The formula is H2NOSO3H and the molecular weight is 113.09 g/mol.
How should Hydroxylamine-O-sulfonic acid be stored?
It should be stored at temperatures between 2 to 8 °C and protected from light and moisture.
What grade is available for Hydroxylamine-O-sulfonic acid?
It is available in technical grade; specific higher grades may be available upon request.
Can Molekula supply Hydroxylamine-O-sulfonic acid in bulk?
Yes, Molekula can supply Hydroxylamine-O-sulfonic acid in bulk quantities—please contact us for pricing and availability.
What documentation comes with an order of Hydroxylamine-O-sulfonic acid?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS) with the shipment.
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.