Amidol Dihydrochloride Photographic ( 2,4-diaminophenol ) [CAS 137-09-7] - 5g

Amidol Dihydrochloride
Other Names: 2,4-Diaminophenol Dihydrochloride, Photographic Amidol
CAS Number: 137-09-7
Sum Formula: C₆H₈Cl₂N₂O
Molar Mass: 199.05 g/mol
Appearance: White to pale beige crystalline powder (may darken on exposure to air or light)

Amidol dihydrochloride is an aromatic amine compound commonly used as a developing agent in black-and-white photographic processing. It is known for producing fine gradation and neutral black image tones and is valued in photographic printing and film development.

Chemical and Physical Properties

• Density: ~1.5 g/cm³

• Melting Point: 300 °C (decomposes)

• Boiling Point: Not applicable (decomposes before boiling)

• Solubility in Water: Freely soluble

• Solubility in Other Solvents: Slightly soluble in ethanol

• Odor: Odorless or faint amine-like

• Stability: Sensitive to light and air; may oxidize over time

Applications

• Photographic Development: Utilized as a primary developer in black-and-white printing papers and photographic films.

• Analytical Chemistry: Employed in certain colorimetric detection methods.

• Redox Chemistry: Functions as a reducing agent under controlled conditions.

• Specialty Chemicals: Applied in research involving aromatic amine derivatives and redox systems.

Safety

Signal Word: Warning

Hazard Statements:

• H302: Harmful if swallowed

• H315: Causes skin irritation

• H319: Causes serious eye irritation

• H335: May cause respiratory irritation

Precautionary Statements:

• P261: Avoid breathing dust or fumes

• P264: Wash hands thoroughly after handling

• P270: Do not eat, drink, or smoke when using this product

• P280: Wear protective gloves and eye protection

• P301+P312: IF SWALLOWED: Call a POISON CENTER or doctor 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. Continue rinsing

Handling and Storage

• Storage Conditions: Store in a tightly sealed container in a cool, dry, well-ventilated area. Protect from light and air to prevent oxidation.

• Handling Precautions: Avoid contact with skin, eyes, and clothing. Avoid dust formation. Use appropriate personal protective equipment (PPE).