Product Overview & Quality

Product Name: Chromotropic acid disodium salt (4,5-Dihydroxynaphthalene-2,7-disulfonic acid disodium salt)
Grade: Laboratory Grade (Lab Grade), widely used as a sensitive reagent for the spectrophotometric determination of formaldehyde and nitrates.
Purity (Assay): Not less than 96%
Physical Properties: Off-white to tan or light brown fine powder; odorless.
Solubility: Soluble in water.

Safety & Hazards

Classification: Categorized as an irritant to eyes, skin, and the respiratory tract.
Health Risks: Direct contact may cause redness, itching, or burning sensations. Inhalation of dust may irritate the mucous membranes and respiratory system.
First Aid Measures: Flush affected skin or eyes with plenty of water. Move to fresh air if dust is inhaled. If swallowed, rinse mouth thoroughly with water.

Handling & Storage

Storage: Light sensitive; must be stored in amber containers or in a dark, cool, and dry place. Protect from moisture to ensure chemical stability.
Precautions: Wear standard PPE, including chemical-resistant gloves, safety goggles, and a dust mask. Prevent dust formation during handling to avoid inhalation or contact.