monosodiumdihydrogenphosphatedihydrate
Sodium dihydrogenphosphate dihydrate
CAS: 13472-35-0
Molecular Formula: H6NaO6P
monosodiumdihydrogenphosphatedihydrate - Names and Identifiers
| Name | Sodium dihydrogenphosphate dihydrate |
| Synonyms | sodium phosphate dihydrate Sodiumdihydrogenphosphate,di MonosodiumPhosphateFoodGradeHydrous Sodium dihydrogenphosphate dihydrate SodiumDihydrogenPhosphateDihydrateIp SodiumDihydrogenPhosphateDihydrateBp SodiumDihydrogenPhosphateDihydrateUsp monosodiumdihydrogenphosphatedihydrate Phosphoricacidmonosodiumsalt,dihydrate Phosphoricacid,monosodiumsalt,dihydrate |
| CAS | 13472-35-0 |
| EINECS | 603-853-2 |
| InChI | InChI: 1S/Na.H3O4P.2H2O/c;1-5(2,3)4;;/h;(H3,1,2,3,4);2*1H2/q+1;;;/p-1 |
| InChIKey | VBJGJHBYWREJQD-UHFFFAOYSA-M |
monosodiumdihydrogenphosphatedihydrate - Physico-chemical Properties
| Molecular Formula | H6NaO6P |
| Molar Mass | 156.01 |
| Density | 1,915 g/cm3 |
| Melting Point | 60 °C |
| Boling Point | 158℃ at 760 mmHg |
| Water Solubility | SOLUBLE |
| Solubility | H2O: 1M at20°C, clear, colorless |
| Appearance | White crystal |
| Color | White |
| Odor | Odorless |
| Maximum wavelength(λmax) | ['λ: 260 nm Amax: 0.085', , 'λ: 280 nm Amax: 0.070'] |
| Merck | 14,8660 |
| PH | 4.0-4.5 (25℃, 50mg/mL in H2O) |
| Storage Condition | Store at +5°C to +30°C. |
| Stability | Stable. |
| Sensitive | Hygroscopic |
| MDL | MFCD00149209 |
| Physical and Chemical Properties | Colorless orthorhombic crystal system. |
| Use | It is an ideal phosphorus source for fish and shrimp feed, especially for young fish and shrimp |
monosodiumdihydrogenphosphatedihydrate - Risk and Safety
| Hazard Symbols | Xi - Irritant |
| Risk Codes | R36 - Irritating to the eyes R36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | S39 - Wear eye / face protection. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S24/25 - Avoid contact with skin and eyes. S36 - Wear suitable protective clothing. |
| WGK Germany | 1 |
| RTECS | WA1900500 |
| TSCA | Yes |
| HS Code | 2835 22 00 |
| Toxicity | LD50 orally in Rabbit: 8290 mg/kg LD50 dermal Rabbit > 7940 mg/kg |
monosodiumdihydrogenphosphatedihydrate - Reference
| Reference Show more | 1. [IF=9.229] Yi Jia et al."Efficient Nitrate-to-Ammonia Electroreduction at Cobalt Phosphide Nanoshuttles."Acs Appl Mater Inter. 2021;13(38):45521–45527 |
monosodiumdihydrogenphosphatedihydrate - Nature
Open Data Verified Data
colorless, odorless, slightly moist rhombic Crystal pump crystallization, relative density of 1. 915. Melting point 60 ℃,100 ℃ dehydration into anhydrous, 190~204 ℃ into sodium acid metaphosphate. 204~244 deg C into sodium metaphosphate, can be directly converted into sodium metaphosphate after ignition.
Last Update：2024-01-02 23:10:35
monosodiumdihydrogenphosphatedihydrate - Preparation Method
Open Data Verified Data
neutralization method was mainly used. The extracted phosphoric acid was added to a neutralization reactor, and a solution of soda ash (saturated) was slowly added with stirring to carry out neutralization reaction, thereby generating sodium dihydrogen phosphate. After filtration, the filtrate is concentrated by evaporation and crystallized to obtain a finished product.
Last Update：2022-01-01 08:53:19
monosodiumdihydrogenphosphatedihydrate - Introduction
All crystal water was lost at 100 ℃. The heat turns into sodium metaphosphate. Easily soluble in water, almost insoluble in alcohol, and its aqueous solution is acidic.
Last Update：2022-10-16 17:13:32
monosodiumdihydrogenphosphatedihydrate - Use
Open Data Verified Data
In the field of water treatment as a treatment agent for boiler water, its main use is especially in high pressure boiler system, in order to maintain the appropriate high alkalinity in the boiler, without producing more OH-in the water, phosphates, mainly sodium dihydrogen phosphate and disodium hydrogen phosphate, are used. In order to control the pH value of the boiler water in the optimum range, disodium hydrogen phosphate is usually used in combination with trisodium phosphate or sodium dihydrogen phosphate. At the same time, an appropriate amount of a dispersing agent is added to suppress the deposits that may be produced. The supplementary water of the boiler should ensure high purity and sufficient water quantity. Sodium dihydrogen phosphate is also a raw material for the manufacture of sodium hexametaphosphate and condensed phosphates.
Last Update：2022-01-01 08:53:20
monosodiumdihydrogenphosphatedihydrate - Safety
Open Data Verified Data
The anhydrous substance has mild irritation to the mucosa, which can cause Diarrhea. The staff should be protected to prevent dust from entering the body. The working environment should be well ventilated. Should be stored in a cool, ventilated, dry, clean, non-toxic warehouse, should not be stacked in the open air. During transportation, it shall be protected from rain, sun, moisture and weathering. They shall not be co-stored with moist or toxic substances, substances that release acid mist and ammonia. When there is a fire, it can be put out by water, sand and carbon dioxide fire retardants.
Last Update：2022-01-01 08:53:20
monosodiumdihydrogenphosphatedihydrate - Reference Information
| pH indicator color change ph range | 4.2 - 4.5 |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| use | as a feed phosphorus supplement additive. as a quality improver, it has the function of improving the complex metal ions, pH value and ionic strength of food, thus improving the adhesion and water holding capacity of food. Our country stipulates that it can be used for condensed milk with a maximum usage of 0.5 g/kg. It is used as analytical reagent, buffer and water softener, and also used for bacterial culture. It is an ideal phosphorus source for fish and shrimp feed, especially young fish and shrimp. Buffer, water softener, manufacture sodium hexametaphosphate and sodium pyrophosphate, and determine magnesium and haploid breeding to prepare improved White medium. Molecular biology grade is used for gel electrophoresis-gel buffer component, for denatured gel containing formaldehyde. |
| production method | add sodium hydroxide or soda ash to concentrated phosphoric acid, and control the Ph value to 4.4~4.6; Filter, concentrate and cool the neutralization liquid to crystallize below 41 ℃; Centrifugal separation and drying to obtain the product. Na2CO3 2H3PO4-2NaH2PO4 H2O CO2 ↑ neutralization method is adopted. It is obtained by neutralizing phosphoric acid with soda ash or sodium hydroxide: adding sodium hydroxide or soda ash to concentrated phosphoric acid, and controlling the PH to 4.4-4.6. The neutralization liquid is filtered, concentrated and cooled to crystallize below 41°C. Centrifugal separation and drying products |
Last Update：2024-05-08 11:00:57
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