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りん酸アンモニウム
りん酸アンモニウム · りん酸二水素アンモニウム · 第一りん酸アンモニウム · 第一酸アンモン · 第一燐酸アンモン · りん酸一アンモニウム · 一基性アンモニウム ホスフェト · りん酸一アンモニウム(りん酸二水素アンモニウム)
識別子と物理属性
| CAS No. | 7722-76-1 |
|---|---|
| 分子式 | (NH4)2HPO4 |
| 平均分子量 | 132.06 g/mol |
| 単同位体質量 | 132.0299934 g/mol |
| SMILES | O=P([O-])([O-])O.[NH4+].[NH4+] |
| InChIKey | MNNHAPBLZZVQHP-UHFFFAOYSA-N |
| PubChem CID | 24540 |
| ChEMBL | CHEMBL2105954 |
| ChEBI | CHEBI:63051 |
| EC No. | 231-987-8 |
| DTXSID | DTXSID6029705 |
| 現地名 | りん酸アンモニウム |
化学・物理的性質
| 極性表面積 | 85.4 |
|---|---|
| 水素結合供与体数 | 3 |
| 水素結合受容体数 | 4 |
| 回転可能結合数 | 0 |
| 重原子数 | 7 |
| 形式電荷 | 0 |
| 複雑度 | 46.5 |
| 物質分類 | Nitrogen Compounds -> Ammonium Compounds |
| 化粧品 | Cosmetic ingredients (Ammonium Phosphate) -> CIR (Cosmetic Ingredient Review)Cosmetic ingredients (Diammonium Phosphate) -> CIR (Cosmetic Ingredient Review)Oral careBuffering |
| pH | pH about 83.8-4.4 (25℃, 50mg/mL in H2O) |
| 農薬 | AttractantsActive substance -> EU Pesticides database: Approved |
| 臭い | OdorlessWeak ammonia odor素晴らしいですね。水晶。または粉末、無臭 |
| 味 | Saline, cooling taste |
| 食品添加物 | FIRMING AGENT, FLAVOR ENHANCER, FLAVORING AGENT OR ADJUVANT, LEAVENING AGENT, MALTING OR FERMENTING AID, NUTRIENT SUPPLEMENT, PH CONTROL AGENT -> FDA Substance added to food |
| 密度 | Diammonium: 1.8 at 68.0 °F Monoammonium: 1.6 at 20 °C (USCG, 1999)1.619 g/cu cmRelative density (water = 1): 1.61.619 @25 °C1.02 g/mL at 20 °C |
| Color/Form | White crystalsCrystals or crystalline powder |
| 溶解度 | Insoluble in ethanol, acetone69.5 g/100 g water at 25 °C1 g dissolves in 1.7 mL water, 0.5 mL boiling waterSolubility in water, g/100ml at 10 °C: 57.5H2O: 0.1M at20℃、透明、無色368g/L（20℃） |
| Decomposition | When heated to decomposition emits very toxic fumes ... of /phosphorus oxides, nitrgen oxides, and ammonia/.100 °C |
| 融点 | 155 °C with decomposition190 °C (dec.) (lit.) |
| 沸点 | 87.4 °C |
| 蒸気圧 | 0.066 hPa (125 °C) |
| 屈折率 | 1.525 |
| 貯蔵条件 | Inert atmosphere,Room Temperature |
| 外観・状態 | 個体 |
| 色 | 白または無色 |
| 比重 | 1.803 |
| Merck | 14,543 |
| 化粧品成分の機能 | バッファリング口腔ケア |
| InChI | 1S/H3N.H3O4P/c1-5(2,3)4/h1H3(H3,1,2,3,4) |
| InChIKey | LFVGISIMTYGQHF-UHFFFAOYSA-N |
| SMILES | N.OP(O)(O)=O |
| LogP（分配係数） | -2.148 (est) |
| CAS データベース | 7722-76-1(CAS DataBase Reference) |
| EPAの化学物質情報 | Monoammonium phosphate (7722-76-1) |
化学的特性
Ammonium phosphate occurs in two forms-the monobasic, NH4H2P04, and dibasic,(NH4)2HP04, forms, It is a white crystalline solid that is soluble in water. Ammonium phosphate is a product of the reaction between ammonia and phosphoric acid.Ammonium phosphate is an important fertilizer and is used as a fire retardant
安全性と法規制
| GHS 分類 | This chemical does not meet GHS hazard criteria for 80.1% (514 of 642) of all reports.WarningH315 (18.5%): Causes skin irritation [Warning Skin corrosion/irritation]P261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501 (click each P-code to see the statement)Aggregated GHS information provided per 642 reports by companies from 23 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies. |
|---|---|
| 規制情報 | Chemical: Phosphoric acid, diammonium saltPhosphoric acid, ammonium salt (1:2) is listed on the EPA's Chemical Data Reporting (CDR) system. Manufacturers and importers of Phosphoric acid, ammonium salt (1:2) are required to report information about their production and use of this chemical to the EPA under the Toxic Substances Control Act (TSCA). (40 eCFR Part 711)2002/2076, Reg. (EU) 2016/548, Reg. (EU) No 540/2011Status: Active Update: 21-03-2023 https://echa.europa.eu/registration-dossier/-/registered-dossier/15555Ammonium monohydrogen orthophosphate: Does not have an individual approval but may be used under an appropriate group standard |
| その他の安全情報 | IMAP assessments - Phosphoric acid, diammonium salt: Human health tier I assessment |
| 火災危険 | Special Hazards of Combustion Products: Toxic and irritating fumes of ammonia and oxides of nitrogen may form in fires. (USCG, 1999)Not combustible. Gives off irritating or toxic fumes (or gases) in a fire. |
| 火災の可能性 | Noncombustible. |
| 健康有害性 | Inhalation of monoammonium form causes irritation of mucous membraneswith diammonium form, ammonia vapors in closed area can cause pulmonary edema and asphyxia. Contact with solid or with ammonia gas causes irritation of eyes and skin. (USCG, 1999) |
| 有害性の概要 | An eye irritant[ICSC] Ammonia vapors may accumulate in a confined space and cause pulmonary edema[CAMEO] Caused contact dermatitis in surgical personnel wearing gowns containing this flame retardant[Kanerva, p. 1778] |
| FDA 要件 | The food additive diammonium phosphate may be safely used in ruminant feed in accordance with the following prescribed conditions: (a) The food additive is the product resulting from the neutralization of feeding-phosphoric-acid or defluorinated wet-process phosphoric acid with anhydrous ammonia. It contains not less than 106.25% equivalent crude protein (nitrogen X 6.25) and 20% phosphorus. It contains not more than the following: 1 part fluorine to 100 parts phosphorus75 ppm arsenic (as As)30 ppm heavy metals, as lead (Pb). (b) It is used in ruminant feeds as a source of phosphorus and nitrogen in an amt that supplies not more than 2% of equivalent crude protein in the total daily ration.Ammonium phosphate (mono-, and dibasic) used as a general purpose food additive in animal drugs, feeds, and related products is generally recognized as safe when used in accordance with good manufacturing or feeding practice.Substance added directly to human food affirmed as generally recognized as safe (GRAS). |
| 反応性グループ | Salts, Acidic |
| Special Reports | WHODiseases Caused by Phosphorus and Its Toxic CompoundsEarly Detection of Occupational Diseases pg 53-62 (1986). Review of diseases and health related effects resulting from exposure to phosphorus or phosphorus cmpd. |
| FIFRA 要件 | Residues of diammonium phosphate are exempted from the requirement of a tolerance when used in accordance with good agricultural practice as inert (or occasionally active) ingredients in pesticide formulations applied to growing crops only. Use: buffer, surfactant. Limit: none. |
| Reactivity Profile | Decomposition of sodium hypochlorite takes place within a few seconds with the following salts: ammonium acetate, ammonium carbonate, ammonium nitrate, ammonium oxalate, and ammonium phosphate [Mellor 2 Supp. 1:550 1956]. Several liquid ammonium phosphate fertilizer tanks have ruptured due to inadequate tank design and maintenance. The failure of these tanks were not considered hazardous, except that the failure of these tanks caused failure of nearby tanks of chemicals such as ammonia (anhydrous) and phosphoric acid. (EPA Chemical Safety Alert) |
| Chemical Dangers | Decomposes above 100 °C . Decomposes on contact with strong bases. This produces toxic and corrosive fumes including ammonia, nitrogen oxides and phosphorus oxides. The solution in water is a weak base. Reacts vigorously with strong acids and strong oxidants. Gradually gives off ammonia on exposure to air. |
| 消火 | In case of fire in the surroundings, use appropriate extinguishing media. |
| 応急処置措置 | Fresh air, rest.Rinse skin with plenty of water or shower.First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention.Rinse mouth. Refer for medical attention . |
| 応急処置 | INHALATION: if exposed to ammonia fumes from diammonium phosphate, give artificial respiration and oxygen if neededenforce rest. |
| 安全保管 | Separated from strong oxidants, strong bases and strong acids. Keep in a well-ventilated room. |
| Firefighting Hazards | Poisonous gases including ammonia, phosphorus oxides, and nitrogen oxides are produced in fire. |
| 消火手順 | Use extinguishing agents suitable for surrounding fire. If material or contaminated runoff enters waterways, notify downstream users of potentially contaminated waters. Notify local health and fire officials and pollution control agencies. From a secure, explosion proof location, use water spray to cool exposed containers. If cooling streams are ineffective (venting sound increases in volume and pitch, tank discolors, or shows any sign of deforming), withdraw immediately to a secure position. |
| 保管条件 | Keep well closed. |
| 清掃方法 | Stop discharge if possible. Keep people away. Avoid contact with solid and dust. Isolate and remove discharged material. Notify health and pollution control agencies. |
| 処分方法 | SRP: The most favorable course of action is to use an alternative chemical product with less inherent propensity for occupational harm/injury/toxicity or environmental contamination. Recycle any unused portion of the material for its approved use or return it to the manufacturer or supplier. Ultimate disposal of the chemical must consider: the material's impact on air qualitypotential migration in soil or watereffects on animal and plant lifeand conformance with environmental and public health regulations. |
| 漏出処分 | Personal protection: particulate filter respirator adapted to the airborne concentration of the substance. Sweep spilled substance into covered containers. If appropriate, moisten first to prevent dusting. Wash away remainder with plenty of water. |
| Preventive Measures | SRP: In bulk storage or manufacturing situations where combustible dusts can collect in sufficient concentrations to give rise to an explosion/deflagration, reasonable precautions shall be taken to reduce or eliminate the hazard. Efforts shall be made to control or eliminate the five elements necessary to initiate a dust explosion. These include combustible dust (fuel), ignition source (heat), oxygen in air (oxidizer), and dispersion of dust particles in sufficient quantity and concentration as well as confinement of the dust cloud. General guidance in these efforts can be found in OSHA's "Combustible Dust in IndustryPreventing and Mitigating the Effects of Fire and Explosions", which list measures to control dusts, eliminate ignition sources, and limit the effects of explosions.SRP: The scientific literature for the use of contact lenses by industrial workers is inconsistent. The benefits or detrimental effects of wearing contact lenses depend not only upon the substance, but also on factors including the form of the substance, characteristics and duration of the exposure, the uses of other eye protection equipment, and the hygiene of the lenses. However, there may be individual substances whose irritating or corrosive properties are such that the wearing of contact lenses would be harmful to the eye. In those specific cases, contact lenses should not be worn. In any event, the usual eye protection equipment should be worn even when contact lenses are in place. |
| Eye Prevention | Wear safety spectacles. |
| 相互作用 | This paper summarizes data on the factors involved in addiction and dependence to cigarettes. Nicotine has been intensively studied by the tobacco industry, for instance for its addictive effect at the lowest possible rates. The addition of diammonium phosphate and urea produces an alcalinization of the pH of cigarette smoke, and promotes the absorption and the trans-membrane passage of nicotine. The taste, the smell of smoke, and the visual aspect of the pack of cigarettes are also sensory components that promote addiction. Finally, menthol, sugar, cocoa and liquorice added to cigarettes also play a role in dependence and addiction to cigarettes by, for instance, making an anesthetic effect on the airways. |
| 生態毒性値 | LC50Species: Grammarus pseudolimnaeus (Northern spring amphipod) (mature)Conditions: static, 18 °CConcentration: 52 mg/L for 96 hr (95% Confidence interval: 48 to 68 mg/L)Concentration: 40 mg/L for 96 hr (95% Confidence interval: 32 to 46 mg/L)Species: Coho salmonConditions: static, 11 °CConcentration: 320 mg/L for 96 hr (95% Confidence interval: 279-367 mg/L)Concentration: 245 mg/L for 96 hr (95% Confidence interval: 216 to 277 mg/L)For more Ecotoxicity Values (Complete) data for DIAMMONIUM HYDROGEN PHOSPHATE (14 total), please visit the HSDB record page. |
| 有害作用 | Skin Sensitizer - An agent that can induce an allergic reaction in the skin. |
| 暴露経路 | The substance can be absorbed into the body by inhalation of its aerosol. |
| 毒性の概要 | The CIR Expert Panel concluded that the following 31 ingredients are safe in the present practices of use and concentration in cosmetics as described in this safety assessment, when formulated to be non-irritating...Ammonium Phosphate...Safe for use in cosmetics, with qualificationsThe CIR Expert Panel concluded that the following 31 ingredients are safe in the present practices of use and concentration in cosmetics as described in this safety assessment, when formulated to be non-irritating...Diammonium Phosphate... |
| 生態毒性抜粋 | /AQUATIC SPECIES/ Acute toxicity to five freshwater fishes and a scud was determined in static tests. 96 hr LC50 ranged from 40 mg/L for scuds to 1500 mg/L for fingerling fish. In salmon and trout, yolk-sac fry were more susceptible than swim-up fry./AQUATIC SPECIES/ The effects of two commonly used fertilizers, diammonium phosphate and urea, on hematological parameters (hemoglobin, red blood cell count, hematocrit, and total leucocyte count) of fresh water fish Clarias batrachus were studied. The toxic effect of diammonium phosphate was more pronounced than that of urea. The toxic effect of diammonium phosphate resulted in a sudden fall of hematological parameters--Hb, red blood cell count, Hct--at higher concentrations, and at lower concentrations gradual decreases were seen over comparatively longer durations. In urea intoxication, slight decreases in the three parameters were seen at lower concentrations during shorter intervals, while at higher concentrations, significant decreases during shorter intervals were observed. Total leucocyte count increased during toxicity with both fertilizers, but higher elevations in total leucocyte count were produced by diammonium phosphate than by urea. |
| Signs and Symptoms | Redness. Pain. |
| Human Toxicity Excerpts | /SIGNS AND SYMPTOMS/ ... With large doses of ... ammonium /salts/, there arises the possibility of sufficient absorption to produce diuresis and systemic ammonia poisoning, particularly if material is administered parenterally. /Ammonium Salts//SIGNS AND SYMPTOMS/ Acute ... eye contact with concentrated alkali causes conjunctival edema and corneal destruction. Alkalies penetrate skin slowly. Extent of damage therefore depends on duration of contact. Chronic poisoning (from skin contact). Chronic dermatitis may follow repeated contact ... /Alkalies and Phosphates//OTHER TOXICITY INFORMATION/ This paper summarizes data on the factors involved in addiction and dependence to cigarettes. Nicotine has been intensively studied by the tobacco industry, for instance for its addictive effect at the lowest possible rates. The addition of diammonium phosphate and urea produces an alcalinization of the pH of cigarette smoke, and promotes the absorption and the trans-membrane passage of nicotine. The taste, the smell of smoke, and the visual aspect of the pack of cigarettes are also sensory components that promote addiction. Finally, menthol, sugar, cocoa and liquorice added to cigarettes also play a role in dependence and addiction to cigarettes by, for instance, making an anesthetic effect on the airways. |
| Non-Human Toxicity Excerpts | /LABORATORY ANIMALS: Acute Exposure/ ...It has been shown that solutions containing 0.1 molar ... ammonium phosphate ... at pH 7-7.5 made up to 0.46 osmolar (1.5 times isotonic concentration) by addition of sodium chloride or sucrose and dripped continuously on eyes of rabbits caused edema of epithelium of the cornea within 3-3.5 hr. /Ammonium Phosphate//LABORATORY ANIMALS: Subchronic or Prechronic Exposure/ In a recent series of experiments, Sherman diets containing 1%, 2.5% and 5% Na4P2O7 were fed for 16 weeks to groups of 20 male and female rats weighing between 90 and 115 ga similar group received a diet containing 5% monophosphate. In the sodium phosphate groups, growth was normal up to the 2.5% levelkidney weight was increased at the 2.5% level (females) and abovekidney function was (concentration test) decreased at the 2.5% level (males) and above. Kidney damage (calcification, degeneration and necrosis) was observed in a greater percentage of rats in the 1% group than in the controls. At the higher concentration of sodium diphosphate more severe kidney damage occurred and, in addition, some of the animals had hypertrophy and hemorrhages of the stomach. The latter abnormality was not found in the 5% monophosphate group. /Diphosphate//LABORATORY ANIMALS: Subchronic or Prechronic Exposure/ In a series of successive experiments, Na4P2O7 was added in concentrations of 1.8%, 3% and 5% to a modified Sherman diet and fed to groups of 34-36 young rats for 6 months. The studies also included control groups and groups receiving the same levels of sodium monophosphate. With 3% and 5% diphosphate diets growth was significantly decreased and at both these concentrations nephrocalcinosis appeared as the main toxic effect. The degree of damage to the kidneys was about the same as that observed in the corresponding monophosphate groups. With the 1.8% diphosphate and monophosphate diets, normal growth occurred, but a slight yet statistically significant increase in kidney weight was noted. Microscopic examination revealed kidney calcification in some of the animals, both in the diphosphate and monophosphate groups. This was more extensive than the calcification occasionally found in the control animals. In an additional experiment, 1.1% of diphosphate and of monophosphate were used. There was a slight growth retardation in the first part of the experiment. After 39 weeks a slight degree of kidney calcification was noted and this was the same for both phosphates. /Diphosphate//GENOTOXICITY/ A tiered testing strategy has been employed to evaluate the potential for new ingredients, tobacco processes, and technological developments to alter the mainstream smoke or biological activity that results from burning cigarette tobacco. The foundation of this evaluation strategy is comparative testing, typically including chemical and biological assessments. In the manufacture of cigarettes, diammonium phosphate (DAP) and urea have been historically used as ingredients added to tobacco, to reconstituted tobacco sheet, and to other processed tobaccos. As part of ongoing stewardship efforts, a toxicological assessment of cigarettes with and without DAP and urea was conducted. Chemical and biological analyses were conducted for test cigarettes added 0.5% DAP and 0.2% urea in the final blend and also for those added 1.0% DAP and 0.41% urea in the final blend compared to reference cigarettes without added DAP or urea. Principal components of this evaluation included a determination of selected mainstream smoke constituent yields, an Ames assay in Salmonella typhimurium strains TA98 and TA100, a sister chromatid exchange assay in Chinese hamster ovary cells, a 13-week inhalation study of mainstream cigarette smoke in Sprague-Dawley rats, and a 30-week dermal tumor-promotion evaluation of mainstream cigarette smoke condensate in SENCAR mice. Comparative evaluations demonstrated that the addition of DAP and urea to cigarettes at up to 1% and 0.41%, respectively, does not alter the biological activity compared to reference cigarettes without DAP or urea. |
| Probable Routes of Human Exposure | According to the 2006 TSCA Inventory Update Reporting data, the number of persons reasonably likely to be exposed in the industrial manufacturing, processing, and use of diammonium phosphate is 1000 or greaterthe data may be greatly underestimated(1). |
| Antidote and Emergency Treatment | /SRP:/ Immediate first aid: Ensure that adequate decontamination has been carried out. If patient is not breathing, start artificial respiration, preferably with a demand valve resuscitator, bag-valve-mask device, or pocket mask, as trained. Perform CPR if necessary. Immediately flush contaminated eyes with gently flowing water. Do not induce vomiting. If vomiting occurs, lean patient forward or place on the left side (head-down position, if possible) to maintain an open airway and prevent aspiration. Keep patient quiet and maintain normal body temperature. Obtain medical attention. /Ammonia and related compounds//SRP:/ Basic treatment: Establish a patent airway (oropharyngeal or nasopharyngeal airway, if needed). Suction if necessary. Watch for signs of respiratory insufficiency and assist ventilations if necessary. Administer oxygen by nonrebreather mask at 10 to 15 L/min. Monitor for signs of pulmonary edema and treat if necessary ... . Monitor for shock and treat if necessary ... . For eye contamination, flush eyes immediately with water. Irrigate each eye continuously with 0.9% saline (NS) during transport ... . Do not use emetics. For ingestion, rinse mouth and administer 5 mg/kg up to 200 ml of water for dilution if the patent can swallow, has a strong gag reflex, and does not drool ... . Do not attempt to neutralize. /Ammonia and related compounds//SRP:/ Advanced treatment: Consider orotracheal or nasotracheal intubation for airway control in the patient who is unconscious, has severe pulmonary edema, or is in severe respiratory distress. Positive-pressure ventilation techniques with a bag-valve-mask device may be beneficial. Consider drug therapy for pulmonary edema ... . Consider administering a beta agonist such as albuterol for severe bronchospasm ... . Monitor cardiac rhythm and treat arrhythmias if necessary ... . Start IV administration of D5W /SRP: "To keep open", minimal flow rate/. Use 0.9% saline (NS) or lactated Ringer's (LR) if signs of hypovolemia are present. For hypotension with signs of hypovolemia, administer fluid cautiously. Consider vasopressors if patient is hypotensive with a normal fluid volume. Watch for signs of fluid overload ... . Use proparacaine hydrochloride to assist eye irrigation ... . /Ammonium and related compounds//SRP:/ Immediate first aid: Ensure that adequate decontamination has been carried out. If patient is not breathing, start artificial respiration, preferably with a demand-valve resuscitator, bag-valve-mask device, or pocket mask, as trained. Perform CPR as necessary. Immediately flush contaminated eyes with gently flowing water. Do not induce vomiting. If vomiting occurs, lean patient forward or place on left side (head-down position, if possible) to maintain an open airway and prevent aspiration. Keep patient quiet and maintain normal body temperature. Obtain medical attention. /Phosphorus and related compounds/For more Antidote and Emergency Treatment (Complete) data for DIAMMONIUM HYDROGEN PHOSPHATE (6 total), please visit the HSDB record page. |
| RAIS Toxicity Values | 48.6PPRTV Archive0.09PPRTV Current |
| 水環境危害等級（WGK） | 1 |
| TSCA 収載状態 | TSCA listed |
| 輸送番号（UN） | UN3264 |
| 毒性 | LD50 orally in Rabbit: 5750 mg/kg LD50 dermal Rabbit > 7940 mg/kg |
| 税関コード | 31054000 |
| 危険文句（R） | 36/37/38 |
| 危険表示 | Xi |
| 安全措置（S） | 24/25-36-26 |
| 危険等級 | 8 |
| 包装等級 | III |
| 貯蔵分類 | 11 - Combustible Solids |
| 有害物質データ | 7722-76-1(Hazardous Substances Data) |
用途
解説
リン酸二水素アンモニウム 俗称第一リン酸アンモニウム。ADPと略記される。化学式(NH4)H2PO4、式量115.03。リン酸水溶液に必要量のアンモニア水を加えて得られる。無色の結晶。密度1.803（19℃）。水100グラムに22.7グラム（0℃）、173.2グラム（100℃）溶ける。190℃で融解し、190.5℃で分解し始め、メタリン酸アンモニウム(NH4PO3)nとなる。(NH4)H2PO4の単結晶は圧電率、誘電率が大きいので、巨大単結晶をつくって高周波発振子に用いられている。また緩衝剤、培養基としても用いられる。
用途
分析におけるpH調整剤, 試液調製原料。
用途
分析におけるpH調整剤、試液調製原料、無機合成原料。
使用
Ammonium dihydrogen phosphate is a general purpose food additive which is readily soluble in water. A 1% solution has a ph of 4.3–5.0. It is used as a dough strengthener and leavening agent in baked goods and as a firming agent and ph control agent in condiments and puddings. It is also used in baking powder with sodium bicarbonate and as a yeast food.
一般的な説明
Ammonium phosphate monobasic (APM) is an inorganic salt widely used in fertilizer, baking powder and yeast production. It is also employed as an agent to control pH of a solution and in corrosion inhibition. APM can be prepared by reacting phosphoric acid with anhydrous ammonia maintaining the pH below 5.8. The change in some of the physical characteristics on its addition to a high carbonate containing unfired and fired illitic shale has been studied.
製法・合成法
製造方法
Preparative method similar to its dibasic salt; obtained by reaction of equimolar amounts of ammonia and phosphoric acid:NH3 + H3PO4 → (NH4)H2PO4.
純化方法
Crystallise it from water (0.7mL/g) between 100o and 0o.