| Product Name | 4-Chlorophthalic acid monosodium salt (MCMSPA) |
| Synonym | Monosodium-4-chlorophthalate |
| CAS No. | 56047-23-5 |
| Molecular Weight | 222.5 |
| Empirical Formula | C8H4ClNaO4 |
| Physical Appearance | White Powder |
| 4-Chloro Phthalic Acid (HPLC) | 70% Min. |
| Dichloro Phthalic Acid | 12% Max. |
| Phthalic Acid | 15% Max |
| NaCl | 8% Max. |
| Moisture | 1% Max. |
