Sodium Dihydrogen Phosphate Dihydrate
Synonyms: Sodium dihydrogen phosphate dihydrate, monohydrate sodium dihydrogen phosphate (to distinguish from anhydrous), monosodium phosphate dihydrate
| Item | Details |
| CAS No. | 13472-35-0 |
| Molecular Formula | NaH2PO4·2H2O |
| Molecular Weight | 156.01 |
| Appearance | Colorless transparent orthorhombic crystals or white crystalline powder, free of agglomeration and yellow impurities |
| Melting Point | 60℃ (loses crystal water, fully dehydrates to generate anhydrous sodium dihydrogen phosphate at 100℃) |
| Solubility | Highly soluble in water, aqueous solution weakly acidic; insoluble in organic solvents such as ethanol and acetone |
| Stability | Stable under sealed and dry conditions at room temperature; dehydrates and loses crystal water at high temperature; neutralizes into phosphate when contacting strong alkalis; slightly efflorescent in humid air; store sealed for moisture protection |
| HS Code | 2835220000 (Sodium dihydrogen phosphate) |
| Packing | Woven bag lined with PE inner film, plastic drum, standard specification: 25kg; outer package marked with moisture-proof and light-proof labels, general industrial / food-grade packaging |
| Storage Conditions | Store in cool, dry and ventilated warehouse, ambient temperature ≤30℃, relative humidity ≤65% RH; seal packaging to isolate air and prevent efflorescence and water loss; do not mix with strong alkalis, lime and alkaline chemicals; use up quickly after opening, seal remaining materials for moisture protection |
| Personal Protection | Wear ordinary dust mask, rubber gloves and goggles during operation; avoid massive dust inhalation and reduce prolonged skin contact; keep operation site ventilated |
| Waste Disposal | Neutralize acidic waste liquid with alkali to neutrality before compliant discharge; recycle solid waste as general industrial solid waste; do not pour directly into natural water bodies and soil |
| Application Fields | Food additive industry; water treatment industry; electroplating and metal surface treatment; daily chemical washing industry; fermentation and biopharmaceuticals; ceramic and glass industry; agricultural fertilizers; electronic chemical industry (general industrial grade) |
