Description

4-Methylaminophenol Sulfate is a key organic intermediate and photographic chemical. This compound is valued for its role as a versatile building block in fine chemical synthesis and as a critical developing agent in photographic processes. It serves the needs of manufacturers in the pharmaceutical, photographic, and specialty chemical industries, where consistent quality and reliable supply are paramount.

Application

• Primary use as a photographic developing agent (e.g., in black-and-white film development).
• Key intermediate in the synthesis of pharmaceutical active ingredients and fine chemicals.
• Used in hair dye formulations and other oxidative coloring products.
• Employed in research and development for organic synthesis.
• Potential use in analytical chemistry as a reagent.
• Component in certain industrial chemical processes requiring phenolic intermediates.

Basic Information

Item	Detail
Product Name	4-Methylaminophenol Sulfate
CAS No.	55-55-0
Molecular Formula	C7H9NO · H2SO4 or C7H11NO5S
Molecular Weight	221.23 g/mol
Synonyms	Metol; p-Methylaminophenol Sulfate; p-(Methylamino)phenol Sulfate; Elon; Photol; Genol; Monomethyl-p-aminophenol Sulfate; 4-(Methylamino)phenol Hemisulfate; p-Hydroxy-N-methylaniline Sulfate
EINECS	200-237-1

Quality Control

Our 4-Methylaminophenol Sulfate is produced under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for identity, purity, and performance. A comprehensive Certificate of Analysis (COA) detailing assay, impurity profile, and physical characteristics is provided with every shipment to guarantee traceability and compliance.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 20 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.