2950-43-8

Name Hydroxylamine-O-sulfonic acid
CAS 2950-43-8
EINECS(EC#) 220-971-6
Molecular Formula H3NO4S
MDL Number MFCD00011604
Molecular Weight 113.09
MOL File 2950-43-8.mol
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Chemical Properties

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)
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Safety Data

Symbol(GHS)  Corrosion (GHS05)Exclamation Mark (GHS07)Environment (GHS09)
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

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Hazard Information

Material Safety Data Sheet(MSDS)

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