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137-09-7

Name 2,4-Diaminophenol dihydrochloride
CAS 137-09-7
EINECS(EC#) 205-279-4
Molecular Formula C6H10Cl2N2O
MDL Number MFCD00012979
Molecular Weight 197.06
MOL File 137-09-7.mol

Chemical Properties

Appearance Grey white powder
Melting point  222 °C (dec.)(lit.)
density  1.3457 (rough estimate)
refractive index  1.5680 (estimate)
storage temp.  Store below +30°C.
solubility  275g/l
form  Crystalline Powder
color  Beige to gray-green
PH 1-2 (50g/l, H2O, 20℃)
Stability: Stable. Incompatible with strong oxidizing agents, acids. Heat and light sensitive.
Water Solubility  27.5 g/100 mL (15 ºC)
Merck  14,2983
BRN  3913728
Uses
A trade name for diamidophenol, a developing agent for silver bromide gelatin emulsions that was introduced by Dr. Anderson in 1892. Amidol made negatives grayish black, with very little fog. It was favored over other alkaline developers because it could facilitate faster exposures.
CAS DataBase Reference 137-09-7(CAS DataBase Reference)
EPA Substance Registry System 137-09-7(EPA Substance)

Safety Data

Hazard Codes  Xn,Xi
Risk Statements 
R22:Harmful if swallowed.
R36/37/38:Irritating to eyes, respiratory system and skin .
Safety Statements 
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36:Wear suitable protective clothing .
RIDADR  UN 2811 6.1/PG 3
WGK Germany  3
RTECS  SK7600000
TSCA  Yes
HazardClass  6.1
PackingGroup  III
HS Code  29222900
Hazardous Substances Data 137-09-7(Hazardous Substances Data)
Toxicity
LD50 orally in Rabbit: 240 mg/kg

Hazard Information

Material Safety Data Sheet(MSDS)

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