Amidol , >98.0%(N)(T) , 137-09-7

Synonym(s):
‘Amidol’;4-Hydroxy-1,3-phenylenediammonium dichloride;Amidol, 2,4-Diaminophenol dihydrochloride, Phenol-2,4-diammonium dichloride, 1-Hydroxybenzene-2,4-diammonium dichloride

CAS NO.：137-09-7

Empirical Formula: C6H10Cl2N2O

Molecular Weight: 197.06

MDL number: MFCD00012979

EINECS: 205-279-4

PRODUCT Properties

• 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℃)
• Water Solubility: 27.5 g/100 mL (15 ºC)
• Merck: 14,2983
• BRN: 3913728
• Stability: Stable. Incompatible with strong oxidizing agents, acids. Heat and light sensitive.
• CAS DataBase Reference: 137-09-7(CAS DataBase Reference)
• EPA Substance Registry System: 2,4-Diaminophenol dihydrochloride (137-09-7)

Description and 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.

Safety

• Symbol(GHS): GHS06
• Signal word: Danger
• Hazard statements: H301-H315-H319-H335
• Precautionary statements: P261-P264-P270-P301+P310-P302+P352-P305+P351+P338
• Hazard Codes: Xn,Xi
• Risk Statements: 22-36/37/38
• Safety Statements: 26-36
• 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