riammonium orthophosphate
Phosphoric acid, triammonium salt
CAS: 10361-65-6
Molecular Formula: H18N3O7P
riammonium orthophosphate - Names and Identifiers
| Name | Phosphoric acid, triammonium salt |
| Synonyms | Einecs 233-793-9 triammmonium phosphate triammoniumorthophosphate riammonium orthophosphate Triammonium orthophosphate Ammonium phosphate tribasic AMMONIUM PHOSPHATE TRIBASIC phosphoricacid,triammoniumsalt AMMONIUM PHOSPHATE TRIBASIC 3 H2O Phosphoric acid, triammonium salt |
| CAS | 10361-65-6 |
| EINECS | 233-793-9 |
| InChI | InChI=1/3H3N.H3O4P/c;;;1-5(2,3)4/h3*1H3;(H3,1,2,3,4) |
riammonium orthophosphate - Physico-chemical Properties
| Molecular Formula | H18N3O7P |
| Molar Mass | 203.13 |
| Appearance | solid (rough estimate) |
| Physical and Chemical Properties | Colorless and transparent crystals of platelets or white rhomboids. Soluble in water, aqueous solution is neutral or weak alkaline; Slightly soluble in dilute ammonia; Insoluble in liquid ammonia, acetone, ethanol and ether. The nature is not stable, the aqueous solution is heated to lose two molecules of ammonia to form ammonium dihydrogen phosphate. Part of the ammonia can be lost in the open air. |
| Use | Used as an analytical reagent |
riammonium orthophosphate - Upstream Downstream Industry
| Raw Materials | Ammonium hydroxide Phosphoric acid Ammonia |
riammonium orthophosphate - Nature
Open Data Verified Data
colorless transparent flakes or rhomboid crystals. Part of the ammonia will be lost in the air for a long time. Soluble in water, insoluble in ethanol, ether.
Last Update：2025-06-10 22:55:16
riammonium orthophosphate - Preparation Method
Open Data Verified Data
neutralization method: the diammonium hydrogen phosphate is added into the chemical tank, dissolved in hot water at about 60 ℃, and the solution with a concentration of about 50% is prepared. After filtration, the clear solution is sent into the reactor, slowly add 27% ~ 28% ammonia water with stirring for neutralization reaction, and generate triammonium phosphate solution when the pH value is 14. Put the reaction solution into the cooling crystallizer, after all the triammonium phosphate crystals are precipitated and separated by centrifugation, after drying, triammonium phosphate was obtained.
Last Update：2025-06-10 22:55:16
riammonium orthophosphate - Application
Open Data Verified Data
is a high concentration of nitrogen and phosphorus compound fertilizer, can be used as a germination agent for sugarcane growth. It is also used as wood fire retardant, water softening agent for water treatment, biological Culture agent, analytical chemical reagent.
Last Update：2025-08-19 16:24:40
riammonium orthophosphate - Safety
Open Data Verified Data
packed in polyethylene plastic bags with plastic woven bags, each with a net weight of 25kg or 50kg. See diammonium hydrogen phosphate for storage.
Last Update：2025-06-10 22:55:16
riammonium orthophosphate - Reference Information
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| compound fertilizer | ammonium phosphate is composed of phosphoric acid (H3PO4) and ammonia (NH3) the reaction produces a compound fertilizer containing two standard amounts of nitrogen and phosphorus. The most widely used ammonium phosphate varieties in the world are monoammonium phosphate and diammonium phosphate, and the ammonium phosphate used as fertilizer is often a mixture of monoammonium and diammonium. when ammonium phosphate is used as fertilizer in agriculture, special attention should be paid to its thermal decomposition and alkali decomposition. In calcareous soil with a pH value greater than 7.5, decomposition and volatilization of ammonia are easy to occur, and water-soluble phosphorus is converted to phosphorus. The main chemical reaction is: CaCO3 +(NH4)2HPO4--2NH3 + CaHPO4 + CO2 + H2O. ammonium phosphate is a high-concentration and rapid-acting compound fertilizer. The content of N + P2O5 is about 64%, which is soluble in water and has high salt index. The salt index of monoammonium phosphate and diammonium phosphate are 30 and 34, respectively. Therefore, special attention should be paid to the direct contact with the seed when the seed fertilizer is used, in order to avoid the release of ammonia in the molecule of the burn. Ammonium phosphate can be used as base fertilizer and topdressing, but because the phosphorus nutrient contained in its molecule is higher than that of nitrogen, the N: P2O5 ratio of monoammonium phosphate is about 1:5, and the diammonium phosphate is about 1:2.5, in order to fully exert the effect of phosphorus in the early stage of crop growth, it is generally appropriate to be used as a base fertilizer, for those with high available phosphorus or for crops with relatively low phosphorus requirements such as rice, even if it is used as a basal fertilizer, a certain amount of nitrogen fertilizer must be applied to adjust the ratio of N: P2O5 to an appropriate level. Ammonium phosphate can be applied in admixture with most fertilizers, but must be avoided in admixture with alkaline fertilizers, which can promote the decomposition of ammonium phosphate and release ammonia. In addition, using ammonium phosphate as raw material, can also be made into a variety of compound fertilizer, the main varieties are: ① ammonium sulfate phosphate. Such as 32% ammonium phosphate and 59% ammonium sulfate production grade of 16-20-0 ammonium phosphate, the physical properties of the product is good, the critical moisture absorption point for the relative humidity of 75.8%, higher than the monoammonium phosphate; ② ammonium phosphate nitrate. Representative varieties of the grade 25-25-0, 28-14-0, etc., by phosphoric acid nitric acid mixed acid and ammonia neutralization products; Urine ammonium phosphate. This is a high concentration of solid compound fertilizer, there are N-P type and N-P-K type, such as grade 28-28-0 and 22-22-11 varieties, generally by the ammonium phosphate slurry or by the powder granular products and spray granulated urea granulation together, the product is good physical, suitable for a variety of soil and crops. |
| solubility in water (g/100ml) | grams dissolved per 100ml of water: 26.1g/20 ℃ |
| Application | is a high concentration of nitrogen and phosphorus compound fertilizer, which can be used as a germination agent for sugarcane growth. It is also used as wood fire retardant, water softening agent for water treatment, biological Culture agent, analytical chemical reagent. used as analytical reagent |
| production method | neutralization method diammonium hydrogen phosphate is added to a chemical tank and dissolved in hot water at about 60 ℃, prepared into a solution of about 50% concentration, after filtration, the clear liquid is sent to the reactor, slowly adding 27% ~ 28% ammonia water under stirring for neutralization reaction, and the triammonium phosphate solution is formed when the pH value is 14, the reaction liquid was discharged into a cooling crystallizer, and after all the triammonium phosphate crystals were precipitated, the triammonium phosphate was centrifuged and dried to obtain triammonium phosphate. (NH4)2HPO4 + NH4OH →(NH4)3PO4 + H2O |
Last Update：2024-04-10 22:29:15
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CAS: 10361-65-6
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View History
riammonium orthophosphate
37229-23-5
化合物CD73-IN-4
鲜薄荷酮
MAGNESIUM SULFATE-1-HYDRATE
桂皮酸异丁酯
454451-26-4
50693-75-9
Methoxyeugenol
10523-82-7
37229-23-5
化合物CD73-IN-4
鲜薄荷酮
MAGNESIUM SULFATE-1-HYDRATE
桂皮酸异丁酯
454451-26-4
50693-75-9
Methoxyeugenol
10523-82-7
Raw Materials for riammonium orthophosphate