Melting point :170 °C (dec.)(lit.)
Boiling point :56.5℃
Density :1.86
vapor pressure :0.001Pa at 20℃
storage temp. :-20°C
solubility :water: soluble(lit.)
form :Crystals
color :White
PH :3.6 (10g/l, H2O, 20℃)
Water Solubility :329 g/L (20 ºC)
Sensitive :Hygroscopic
Merck :14,4828
Stability :Stable, but may be an explosion hazard - do not heat. May decompose explosively in the presence of alkalies. Air sensitive. Hygroscopic. Incompatible with copper, copper alloys, strong oxidising agents, strong bases, nitrites.
LogP :-1.031 (est)
CAS DataBase Reference :10039-54-0(CAS DataBase Reference)
EPA Substance Registry System :Hydroxylamine sulfate (2:1) (10039-54-0)

Symbol(GHS):
Signal word:	Warning
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H290 May be corrosive to metals Corrosive to Metals Category 1 Warning P234, P390, P404 H315 Causes skin irritation Skin corrosion/irritation Category 2 Warning P264, P280, P302+P352, P321,P332+P313, P362 H317 May cause an allergic skin reaction Sensitisation, Skin Category 1 Warning P261, P272, P280, P302+P352,P333+P313, P321, P363, P501 H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning P264, P280, P305+P351+P338,P337+P313P H351 Suspected of causing cancer Carcinogenicity Category 2 Warning P201, P202, P281, P308+P313, P405,P501 H373 May cause damage to organs through prolonged or repeated exposure Specific target organ toxicity, repeated exposure Category 2 Warning P260, P314, P501 H400 Very toxic to aquatic life Hazardous to the aquatic environment, acute hazard Category 1 Warning P273, P391, P501
Precautionary statements:	P273 Avoid release to the environment. P280 Wear protective gloves/protective clothing/eye protection/face protection. P301+P312 IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P308+P313 IF exposed or concerned: Get medical advice/attention.