| Identification | More | [Name]
Hydroxylamine-O-sulfonic acid | [CAS]
2950-43-8 | [Synonyms]
HOS
HOSA
HYDROXYLAMINE-O-SULFONIC ACID
HYDROXYLAMINE-O-SULPHONIC ACID
HYDROXYLAMINESULFONIC ACID
HYDROXYLAMMONIUM-O-SULFONIC ACID
amidoperoxymonosulfuricacid
amidosulfonicperacid
aminomonopersulfuricacid
haos
o-hydroxylammoniumsulfonate
permonosulfamicacid
sulfoperamidicacid
HYDROXYLAMINE-O-SULFONIC ACID, 99.999%
HYDROXYLAMINE-O-SULFONIC ACID, TECH., 90 %
Hydrozylamine-0-Sulfonic Acid
Hydraxylamine-O-SulphonicAcid96-97%
HYDROXYLAMINE-D-SULFONIC ACID
(Sulfooxy)amine
O-Sulfohydroxylamine | [EINECS(EC#)]
220-971-6 | [Molecular Formula]
H3NO4S | [MDL Number]
MFCD00011604 | [Molecular Weight]
113.09 | [MOL File]
2950-43-8.mol |
| Chemical Properties | Back Directory | [Appearance]
white to slightly beige crystalline powder | [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℃) | [biological source]
rabbit | [Water Solubility ]
soluble | [Sensitive ]
Hygroscopic | [BRN ]
956566 | [InChI]
1S/H3NO4S/c1-5-6(2,3)4/h1H2,(H,2,3,4) | [InChIKey]
DQPBABKTKYNPMH-UHFFFAOYSA-N | [SMILES]
NOS(O)(=O)=O | [CAS DataBase Reference]
2950-43-8(CAS DataBase Reference) | [EPA Substance Registry System]
2950-43-8(EPA Substance) |
| Safety Data | Back Directory | [Symbol(GHS) ]
  
GHS05,GHS07,GHS09 | [Signal word ]
Danger | [Hazard statements ]
H302-H314-H410 | [Precautionary statements ]
P260-P280-P301+P312+P330-P303+P361+P353-P304+P340+P310-P305+P351+P338 | [Hazard Codes ]
C,N | [Risk Statements ]
R34:Causes burns.
R50:Very Toxic to aquatic organisms.
R43:May cause sensitization by skin contact.
R40:Limited evidence of a carcinogenic effect.
R22:Harmful if swallowed. | [Safety Statements ]
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
S61:Avoid release to the environment. Refer to special instructions safety data sheet .
S27:Take off immediately all contaminated clothing .
S22:Do not breathe dust . | [RIDADR ]
UN 3260 8/PG 3
| [WGK Germany ]
3
| [RTECS ]
NC5427000
| [F ]
10-21 | [Hazard Note ]
Irritant | [TSCA ]
Y | [REACH Registrations]
Active | [HazardClass ]
8 | [PackingGroup ]
III | [HS Code ]
28111980 | [Storage Class]
8A - Combustible corrosive hazardous materials | [Hazard Classifications]
Acute Tox. 4 Oral
Aquatic Acute 1
Aquatic Chronic 3
Eye Dam. 1
Skin Corr. 1B |
| Hazard Information | Back Directory | [Chemical Properties]
white to slightly beige crystalline powder | [Uses]
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. | [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. | [Synthesis]
63 ml of 20~25% fuming sulfuric acid was slowly added dropwise to 16.4 g of hydroxylamine sulfate under mechanical stirring. The temperature was controlled below 60°C, and the time of dropwise addition was 40~60 minutes. After the dropwise addition | [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.] |
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| Company Name: |
J & K SCIENTIFIC LTD.
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| Telephone: |
18210857532 18210857532 |
| Website: |
https://www.jkchemical.com |
| Company Name: |
Alfa Aesar
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400-6106006 |
| Website: |
http://chemicals.thermofisher.cn |
| Company Name: |
Energy Chemical
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| Telephone: |
400-0056266 |
| Website: |
www.energy-chemical.com |
| Company Name: |
Jia Xing Isenchem Co.,Ltd
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| Telephone: |
0573-85285100 18627885956 |
| Website: |
https://www.chemicalbook.com/ShowSupplierProductsList14265/0_EN.htm |
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