Ammonium dihydrogen phosphate

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Ammonium dihydrogen phosphate

description Chemical properties Uses Content analysis Toxicity Preparation method

Product Name: Ammonium dihydrogen phosphate
CAS No.: 7722-76-1
Chemical Name: Ammonium dihydrogen phosphate
Synonyms: MAP;MONOAMMONIUM PHOSPHATE;AMMONIUM PHOSPHATE;12-61-00;Ammonium dihydrogen;AMMONIUM BIPHOSPHATE;monoammoniumacidphosphate;PHOSPHORIC ACID MONOAMMONIUM SALT;AMMONIUM DIHYDROGEN ORTHOPHOSPHATE;Ammonium Hydrogen Monohydric Phosphate
CBNumber: CB6131092
Molecular Formula: H6NO4P
Formula Weight: 115.03
MOL File: 7722-76-1.mol

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Ammonium dihydrogen phosphate Property

Melting point:: 190 °C (dec.) (lit.)
Boiling point:: 87.4 °C
Density: 1.02 g/mL at 20 °C
vapor pressure: 0.066 hPa (125 °C)
RTECS: TC6587000
storage temp.: Inert atmosphere,Room Temperature
solubility: H₂O: 0.1 M at 20 °C, clear, colorless
form: Solid
color: White or colorless
Specific Gravity: 1.803
Odor: brilliant wh. cryst. or powd., odorless
PH Range: 3.8 - 4.4
PH: 3.8-4.4 (25℃, 50mg/mL in H2O)
Water Solubility: 368 g/L (20 ºC)
λmax: λ: 260 nm Amax: ≤0.059
λ: 280 nm Amax: ≤0.050
Merck: 14,543
InChIKey: LFVGISIMTYGQHF-UHFFFAOYSA-N
LogP: -2.148 (est)
CAS DataBase Reference: 7722-76-1(CAS DataBase Reference)
EPA Substance Registry System: Monoammonium phosphate (7722-76-1)

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Safety

Hazard Codes: Xi
Risk Statements: 36/37/38
Safety Statements: 24/25-36-26
RIDADR: UN3264
WGK Germany: 1
TSCA: Yes
HazardClass: 8
PackingGroup: III
HS Code: 31054000
Hazardous Substances Data: 7722-76-1(Hazardous Substances Data)
Toxicity: LD50 orally in Rabbit: 5750 mg/kg LD50 dermal Rabbit > 7940 mg/kg

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Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P304+P340IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P405Store locked up.

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N-Bromosuccinimide Price

Sigma-Aldrich

Product number: NIST194A
Product name: Ammonium dihydrogen phosphate
Purity: NIST? SRM? 194a
Packaging: 90g
Price: $1160
Updated: 2024/03/01

Sigma-Aldrich

Product number: AX1350-7
Product name: Ammonium Phosphate, Monobasic
Purity: Meets ACS Specifications, Meets Reagent Specifications for testing USP/NF monographs GR ACS
Packaging: 12kg
Price: $1540
Updated: 2024/03/01

Sigma-Aldrich

Product number: 216003
Product name: Ammonium phosphate monobasic
Purity: ACS reagent, ≥98%
Packaging: 100g
Price: $45.1
Updated: 2024/03/01

Sigma-Aldrich

Product number: 216003
Product name: Ammonium phosphate monobasic
Purity: ACS reagent, ≥98%
Packaging: 500g
Price: $124
Updated: 2024/03/01

Sigma-Aldrich

Product number: 216003
Product name: Ammonium phosphate monobasic
Purity: ACS reagent, ≥98%
Packaging: 2.5kg
Price: $385
Updated: 2024/03/01

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Ammonium dihydrogen phosphate Chemical Properties,Usage,Production

description

Ammonium dihydrogen phosphate (ADP) is a transparent, piezoelectric crystal containing no water of crystallization. Single crystals of this material were originally developed for use in underwater sound projectors and hydrophones.

Transducer problems during World War II fostered a joint study program on this material by Bell Telephone Laboratories, Brush Development Company and the Naval Research Laboratories. An adequate and relatively simple technology was developed in this joint effect to grow ADP crystals and to fabricate them into sonar transducers. ADP is comparable to ordinary table salt in workability, brittleness and solubility. Blumenthal was one of the first investigators to demonstrate the successful microwave modulation of light by using the electrooptic effect in ADP.

Chemical properties

Ammonium dihydrogen phosphate is a colorless transparent tetragonal crystal. soluble in water, slightly soluble in alcohol, insoluble in acetone.
Ammonium dihydrogen phosphate or monoammonium phosphate is formed when a solution of phosphoric acid is added to ammonia until the solution is distinctly acid. It crystallizes in quadratic prisms. Monoammonium phosphate is often used in the blending of dry agricultural fertilizers. It supplies soil with the elements nitrogen and phosphorus in a form which is usable by plants. The compound is also a component of the ABC powder in some dry powder fire extinguishers.

Uses

Monoammonium phosphate (MAP) is a widely used source of P and N. It is made of two constituents common in the fertilizer industry and has the highest P content of any common solid fertilizer.
MAP has been an important granular fertilizer for many years. It is water soluble and dissolves rapidly in soil if adequate moisture is present. Upon dissolution, the two basic components of the fertilizer separate again to release NH4 + and H2PO4 - . Both of these nutrients are important to sustain healthy plant growth. The pH of the solution surrounding the granule is moderately acidic, making MAP an especially desirable fertilizer in neutral and high pH soils. Agronomic studies show that there is no significant difference in P nutrition from various commercial P fertilizers under most conditions.
Leavening agent, dough regulator, yeast food, brewing fermentation additives and buffer in the food industry.
Animal feed additives.
Nitrogen and phosphorus compound fertilizer with highly efficient.
Fire retardant for wood, paper, fabric, dispersant for fiber processing and dyeing industry, glaze for enamel, cooperating agent for fire retardant coating, decontamination agent for match stalk and candle core.
In indurstis of printing plate and pharmaceutical manufacturing.

Content analysis

Accurately weighed about 500mg sample, dissolved in 50ml of water, with 0.1mol/L sodium hydroxide titration to pH 8.0. per mL, 0.1mol/L sodium hydroxide is equivalent to diammonium phosphate [NH4H2PO4] 11.50 mg.

Toxicity

ADI: 0 to 70 mg/kg (amount of total phosphate as phosphorus; FAO/WHO, 2001).
GRAS (FDA, § 184.1141a, 2000).

Preparation method

Venturi loop reaction method: 85% thermal phosphoric acid will be diluted 1.3 to 1.4 times, after the measurement into the venturi tube flow mixing reactor, where it is sufficiently homogeneously mixed and reacted with the incoming ammonia gas, and the reaction process is continued in the pipeline. Finally the qualified liquid enters into the cycle reaction tank, adjusting the Ph value between the range 4.4 to 4.6, filtering and cooling the filtrate down to 26 oC, obtaining the crystal solid, separating and dehydrating, and then drying it to obtain the dihydrogen phosphate Ammonium products.
H3PO4 + NH3 → NH4H2PO4
Neutralization method: firstly dilute the phosphoric acid to get a solution with 50% to 55% concentration, and then take some measured solution into an enamel reaction tank with stirring and jacket. In stirring, the ammonia gas is slowly added into the ammonia tube distributor for neutralization. Waiting till the Ph value of the neutralized solution gets between 4.2~4.6, filter it immediately and send it into the cooling crystallization mold, then obtain crystallization when the temperature gets down to 26 °. Dry after dehydration and then obtain ammonium dihydrogen phosphate products.
H3PO4 + NH3 → NH4H2PO4
Mother liquor from separator is added into the iron remover with ammonium sulfide for removing iron, filtering, and then senting to the acid tank to adjust the acidity to Ph4.4~4.6. Refined mother liquor is supplied for recycling.
Metathesis method Calcium dihydrogen phosphate and ammonium sulfate were melted at 85-90 °C to produce a clear solution below the saturation concentration. Firstly, the calcium dihydrogen phosphate solution is added into the reactor, and the temperature of the steam is raised to 95 oC under stirring, and the ammonium sulphate solution is added slowly for metathesis reaction to produce ammonium dihydrogen phosphate and calcium sulphate. The end point of the reaction is that Ph value is about 4.4 to 4.6. After filtration, the filtrate is sent into the evaporator to the boiling point of 108 °C, and then is sended into the cooling crystallizer, cooling to 40 °C for crystallization, centrifugal separating, drying, and then obtaining ammonium dihydrogen phosphate product.
Ca (H2PO4) 2 H2O + (NH4) 2SO4 → This product + CaSO4 + H2O
The separated calcium sulfate is filtered and washed to produce a by-product. The lotion is returned for the feed.

Chemical Properties

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

Physical properties

Electrooptic coefficient (cm/stat-volt): γ₆₃=-2.54×10^-7, γ₄₁₌62×10^-7
Dielectric constants: ε₀=56.4–55.9 (10² –10⁸ Hz, E⊥C), 16.4–13.7 (10² –10 Hz, E//C).

Physical properties

White crystalline powder; odorless; density 1.80 g/cm³; readily dissolves in water (40 g/ 100 g); pH of 0.2 molar solution 4.2; slightly soluble in alcohol; insoluble in acetone.

Uses

Used as buffer solutions.

Uses

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.

Uses

As baking powder with sodium bicarbonate; in fermentations (yeast cultures, etc.); fireproofing of paper, wood, fiberboard, etc.

Definition

ChEBI: The ammonium salt of phosphoric acid (molar ratio 1:1).

Preparation

Preparative method similar to its dibasic salt; obtained by reaction of equimolar amounts of ammonia and phosphoric acid:
NH₃ + H₃PO₄ → (NH₄)H₂PO₄.

General Description

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.

Flammability and Explosibility

Not classified

Agricultural Uses

Ammonium phosphates refer to a generic class of phosphorus fertilizers and are manufactured by reacting anhydrous ammonia with orthophosphoric acid or superphosphoric acid. These are either in solid or liquid form.
Ammonium phosphate fertilizers are highly soluble in water and fast acting in soil to give nitrogen and phosphorus in a chemical combination. They form an important base for many compound fertilizers. Both mono and diammonium phosphates have good physical properties when synthesized from the wetprocess phosphoric acid. Storage properties and the ease of granulation depends on the amount of impurities, which form a gel like structure (mainly aluminum and iron phosphates). This gel promotes granulation and serves as a conditioner to prevent caking even at moderately high moisture levels. A small proportion of phosphate rock added to phosphoric acid before ammoniation improves the granulation.
Ammonium phosphates, particularly Ammonium dihydrogen phosphate(DAP), are the most popular phosphate fertilizers worldwide because of their high utility and good physical properties. The standard commodity grade of diammonium phosphate is 18-46-0. Pure and completely soluble ammonium phosphates are used mainly as liquid fertilizers. In Britain, diammonium phosphate is not sold directly in this form, but is used to make compound fertilizers with a wide variety of plant foods.

Biochem/physiol Actions

Ammonium dihydrogenphosphate (ADP) exhibits non-linear optical (NLO) and electro-optic (EO) properties.

Potential Exposure

Used in fireproofing of textiles; wood and paper; in soldering flux; as a fertilizer; a buffer; in baking powder and food additives.

Shipping

There are no DOT/UN listed requirements.

Purification Methods

Crystallise it from water (0.7mL/g) between 100o and 0o.

Incompatibilities

Incompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause fires or explosions. Keep away from alkaline materials, strong bases, strong acids, oxoacids, epoxides. Contact with air causes this chemical to produce anhydrous ammonia fumes.

Waste Disposal

May be flushed to sewer with huge volumes of water.

Ammonium dihydrogen phosphate Preparation Products And Raw materials

Raw materials

Enamel reaction vessel Calcium phosphate monobasic Phosphate rock powder Phosphoric acid ROCK PHOSPHATE Ammonium sulfide Mixed reactor Ammonium sulfate Ammonia

Preparation Products

Compound fertilizer Nitrogen phosphorus potassium mixed fertilizer Ammonium polyphosphate Mixed and compound fertilizer Compound fertilizer of potassium sulfate Compound fertilizer,high concentration Water flush fertilizer

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Hebei Zhuanglai Chemical Trading Co Ltd

Product: Monoammonium Phosphate 7722-76-1
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Purity: 99%
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Release date: 2024-12-18

HEBEI SHENGSUAN CHEMICAL INDUSTRY CO.,LTD

Product: Ammonium dihydrogen phosphate 7722-76-1
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Hebei Miaoyin Technology Co.,Ltd

Product: Ammonium dihydrogen phosphate 7722-76-1
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Release date: 2023-04-07

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