Hydroxylamine-O-sulfonic acid
Synonym(s):Hos;tbx5;tbx5.1;tbx5a;zTbx5
- CAS NO.:2950-43-8
- Empirical Formula: H3NO4S
- Molecular Weight: 113.09
- MDL number: MFCD00011604
- EINECS: 220-971-6
- SAFETY DATA SHEET (SDS)
- Update Date: 2024-08-19 22:39:07
What is Hydroxylamine-O-sulfonic acid?
Chemical properties
white to slightly beige crystalline powder
The Uses of Hydroxylamine-O-sulfonic acid
Hydroxylamine-O-sulfonic acid is used in the synthesis of quinolones for the benzodiazepine site of GABAA receptors. It is also used as a polymerization catalyst and an amination reagent. It is involved in the preparation of diazene by reacting with an alkali. It is also used in the inhibition of polychlorinated dibenzo-p-dioxins (PCDD) as well as (polychlorinated biphenyl) PCB formation in co-combustion.
The Uses of Hydroxylamine-O-sulfonic acid
Hydroxylamine-O-sulfonic acid (HOSA) may be used to synthesize (Z)-1H-purin-6(7H)-ylideneaminooxysulfonic acid.
HOSA may be used as an aminating reagent in the synthesis of:
- 1-aminotetrazoles and 2-aminotetrazoles
- N-aminopiperidine (NAPP)
- 1H,1′ H-2,2′-biimidazole-1,1′-diamine
General Description
Hydroxylamine-O-sulfonic acid is a versatile synthetic reagent. It is widely employed as a nucleophile and as an electrophile in various organic syntheses. It can be synthesized by reacting hydroxylamine sulfate with 30% fuming H2SO4.
Purification Methods
Stir the solid vigorously with anhydrous Et2O and filter it off using large volumes of dry Et2O. Drain dry at the pump for 5minutes and then for 12-14hours in a vacuum. Store it in a vacuum desiccator over conc H2SO4. Determine the purity by oxidation of iodide to I2. It must be stored in a dry atmosphere at 0-4o. It decomposes slowly in H2O at 25o and more rapidly above this temperature. [Matsuguma & Andrieth Inorg Synth V 122 1957.]
Properties of Hydroxylamine-O-sulfonic acid
Melting point: | 210 °C (dec.)(lit.) |
Boiling point: | 39 °C(Press: 0.4 Torr) |
Density | 2.2 g/cm3 (20℃) |
vapor pressure | 0-53.329Pa at 25-39℃ |
storage temp. | 2-8°C |
solubility | 675g/l (slow decomposition) |
form | Crystalline Powder |
pka | -6.47±0.18(Predicted) |
color | White |
PH | 0.8 (100g/l, H2O, 20℃) |
Water Solubility | soluble |
Sensitive | Hygroscopic |
BRN | 956566 |
CAS DataBase Reference | 2950-43-8(CAS DataBase Reference) |
EPA Substance Registry System | Hydroxylamine-O-sulfonic acid (2950-43-8) |
Safety information for Hydroxylamine-O-sulfonic acid
Signal word | Danger |
Pictogram(s) |
Corrosion Corrosives GHS05 Exclamation Mark Irritant GHS07 Environment GHS09 |
GHS Hazard Statements |
H302:Acute toxicity,oral H314:Skin corrosion/irritation H410:Hazardous to the aquatic environment, long-term hazard |
Precautionary Statement Codes |
P260:Do not breathe dust/fume/gas/mist/vapours/spray. P280:Wear protective gloves/protective clothing/eye protection/face protection. P303+P361+P353:IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. |
Computed Descriptors for Hydroxylamine-O-sulfonic acid
InChIKey | DQPBABKTKYNPMH-UHFFFAOYSA-N |
Abamectin manufacturer
SAISREE CHEMICALS
Vepan Pharmatech Pvt Ltd
Shan Dong Believe Chemical Pte. Ltd.
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