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ChemicalBook--->CAS DataBase List--->2950-43-8

2950-43-8

2950-43-8 Structure

2950-43-8 Structure
IdentificationMore
[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 PropertiesBack 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
[InChIKey]

DQPBABKTKYNPMH-UHFFFAOYSA-N
[CAS DataBase Reference]

2950-43-8(CAS DataBase Reference)
[EPA Substance Registry System]

2950-43-8(EPA Substance)
Safety DataBack Directory
[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
[HazardClass ]

8
[PackingGroup ]

III
[HS Code ]

28111980
Raw materials And Preparation ProductsBack Directory
[Preparation Products]

1-ISOPROPYL-5-HYDROXYPYRAZOL-->Dimethylglyoxime-->Pyrazolo[1,5-a]pyridine-3-carboxylic acid-->1H-INDOL-1-AMINE-->3-(3-Nitrophenyl)propionic acid
Material Safety Data Sheet(MSDS)Back Directory
[msds information]

HOSA(2950-43-8).msds
Hazard InformationBack 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.
[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.]
Spectrum DetailBack Directory
[Spectrum Detail]

Hydroxylamine-O-sulfonic acid(2950-43-8)IR1
Hydroxylamine-O-sulfonic acid(2950-43-8)IR2
Well-known Reagent Company Product InformationBack Directory
[Acros Organics]

Hydroxylamine-O-sulfonic acid, 90%(2950-43-8)
[Alfa Aesar]

Hydroxylamine-O-sulfonic acid, 97%(2950-43-8)
[Sigma Aldrich]

2950-43-8(sigmaaldrich)
[TCI AMERICA]

Hydroxylamine-O-sulfonic Acid,>90.0%(T)(2950-43-8)
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