无水磷酸二氢钠（CAS 7558-80-7）：分子式 H2NaO4P、分子量 119.977；类别 食品添加剂。
| CAS号 | 7558-80-7 |
|---|---|
| 分子式 | H2NaO4P |
| 分子量 | 119.977 |
| 应用领域 | Surface modifier、Anti-scaling agent、Intermediate、Chelating agent、Adhesion cohesion promoter、Corrosion inhibitor、Thickening agent、Brightener |
| 类别 | 食品加工助剂|营养强化剂 |
登记用途：Surface modifier、Anti-scaling agent、Intermediate、Chelating agent、Adhesion cohesion promoter、Corrosion inhibitor、Thickening agent、Brightener。
无水磷酸二氢钠 是一种食品级化合物，登记 CAS 号为 7558-80-7，分子式 H2NaO4P（分子量 119.977），归属于食品添加剂大类化工原料。
登记 CAS 号：7558-80-7
其分子式 H2NaO4P 由 2 个氢、1 个钠、4 个氧、1 个磷 组成。
别名/同义词：无水磷酸二氢钠 · sodium dihydrogen phosphate anhydrous · Monosodium phosphate
所属分类：食品添加剂 / 食品添加剂
无水磷酸二氢钠 的 CAS 登记号为 7558-80-7。
分子式 H2NaO4P，分子量 119.977。
别名/同义词：无水磷酸二氢钠、sodium dihydrogen phosphate anhydrous、Monosodium phosphate。
登记用途：Surface modifier、Anti-scaling agent、Intermediate、Chelating agent、Adhesion cohesion promoter、Corrosion inhibitor、Thickening agent、Brightener。
所属分类：食品加工助剂 / 营养强化剂。
无水磷酸二氢钠（CAS 7558-80-7）的独立参考数据，整理自公开化学数据库。
| CAS Registry Number | 7558-80-7 |
|---|---|
| PubChem CID | 23672064 |
| Molecular formula | H2NaO4P |
| Molecular weight | 119.96 g/mol |
| IUPAC name | sodium dihydrogen phosphate |
| InChIKey | AJPJDKMHJJGVTQ-UHFFFAOYSA-M |
| UNII (FDA) | KH7I04HPUU |
| ChEBI ID | CHEBI:37585 |
| Molecular Weight | 119.977 |
|---|---|
| Hydrogen Bond Donor Count | 2 |
| Hydrogen Bond Acceptor Count | 4 |
| Rotatable Bond Count | 0 |
| Exact Mass | 119.95883982 |
| Monoisotopic Mass | 119.95883982 |
| Topological Polar Surface Area | 80.6 |
| Heavy Atom Count | 6 |
| Melting Point | 200 °C (decomposes) |
|---|---|
| Solubility | 121 |
| Density | 2360 kg/cu m |
7558-80-7; Monosodium phosphate; SODIUM DIHYDROGEN PHOSPHATE; Sodium acid phosphate; Sodium phosphate, monobasic; Sodium primary phosphate; Acid sodium phosphate; Monosodium monophosphate; Monobasic sodium phosphate; Monosodium dihydrogen orthophosphate; Monosodium phosphate, anhydrous; Monosodium orthophosphate; Monosorb XP-4; Primary sodium phosphate; Sodium dihydrogen phosphate, anhydrous; Sodium phosphate (Na(H2PO4))
| Regulatory & Food Contact | FDA Substance added to food: ANTICAKING AGENT OR FREE-FLOW AGENT, ANTIMICROBIAL AGENT, DRYING AGENT, EMULSIFI FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS ACIDITY_REGULATOR; SEQUESTRANT: Food Additives ANTICAKING AGENT OR FREE-FLOW AGENT, ANTIMICROBIAL AGENT, DRYING AGENT, EMULSIFIER OR EMULSIFIER SALT, FLAVOR Group MTDI for phosphorus from all sources, expressed as P TRS 683-JECFA 26/25 |
|---|---|
| GHS notification summary | 89% (597 / 671) |
| GHS notification summary | 89% (597 / 671) |
|---|---|
| Reported hazard statements | H319 (11%) |
This chemical does not meet GHS hazard criteria for 89% (597 of 671) of all reports.
H319 (11%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]
Monosodium phosphate is identified by CAS 7558-80-7, molecular formula H2NaO4P and molecular weight 119.96 g/mol. UNII KH7I04HPUU; ChEBI 37585; InChIKey AJPJDKMHJJGVTQ-UHFFFAOYSA-M. Melting Point: 200 °C (decomposes); Solubility: 121; Density: 2360 kg/cu m.
数据来源：PubChem / Wikidata；与随货 COA 不一致时以 COA 为准。
English page: sodium dihydrogen phosphate anhydrous