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Name 3,6-Dihydroxypyridazine
CAS 123-33-1
EINECS(EC#) 204-619-9
Molecular Formula C4H4N2O2
MDL Number MFCD00006665
Molecular Weight 112.09
MOL File 123-33-1.mol

Chemical Properties

Appearance Maleic hydrazide is a crystalline solid
Melting point  299-301 °C (dec.)(lit.)
Boiling point  209.98°C (rough estimate)
density  1,6 g/cm3
refractive index  1.4610 (estimate)
Fp  300°C
storage temp.  0-6°C
solubility  4510mg/l
form  neat
pka 9.01±0.20(Predicted)
color  White crystalline
Odor Odorless
Water Solubility  6 g/L
Detection Methods HPLC
Merck  14,5705
BRN  112223
CAS DataBase Reference 123-33-1(CAS DataBase Reference)
IARC 3 (Vol. 4, Sup 7) 1987
NIST Chemistry Reference Maleic hydrazide(123-33-1)
EPA Substance Registry System 123-33-1(EPA Substance)

Safety Data

Hazard Codes  Xi,Xn
Risk Statements 
R36/37/38:Irritating to eyes, respiratory system and skin .
R40:Limited evidence of a carcinogenic effect.
Safety Statements 
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36:Wear suitable protective clothing .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection .
RIDADR  UN 3077 9/PG 3
WGK Germany  2
RTECS  UR5950000
Autoignition Temperature 707 °F
HS Code  29339990
Safety Profile
Moderately toxic by ingestion. Questionable carcinogen with experimental tumorigenic data. Mutation data reported. Can cause chronic liver damage and acute central nervous system effects. When heated to decomposition it emits hghly toxic fumes of NOx See also HYDRAZINE.
Hazardous Substances Data 123-33-1(Hazardous Substances Data)
LD50 orally in rats: 3800-6800 mg/kg; dermally in rabbits: >4000 mg/kg (Ben-Dyke)

Hazard Information

Material Safety Data Sheet(MSDS)

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