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HomeProduct name listAmmonium dihydrogen phosphate

Ammonium dihydrogen phosphate

Synonym(s):Ammonium dihydrogen phosphate;APM;Ammonium phosphate monobasic;Ammonium Phosphate, Monobasic;Ammonium dihydrogenphosphate

  • CAS NO.:7722-76-1
  • Empirical Formula: H6NO4P
  • Molecular Weight: 115.03
  • MDL number: MFCD00003396
  • EINECS: 231-764-5
  • SAFETY DATA SHEET (SDS)
  • Update Date: 2024-10-30 18:52:02
Ammonium dihydrogen phosphate Structural

What is Ammonium dihydrogen phosphate?

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

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.

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, EC), 16.4–13.7 (102 –10 Hz, E//C).

The Uses of Ammonium dihydrogen phosphate

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.

The Uses of Ammonium dihydrogen phosphate

Used as buffer solutions.

The Uses of Ammonium dihydrogen phosphate

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

What are the applications of Application

Ammonium phosphate monobasic solution is a buffer or buffer component used in solid phase column chromatography

What are the applications of Application

Ammonium phosphate monobasic is a water soluble preparation of ammonium phosphate

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.

Properties of Ammonium dihydrogen phosphate

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
PH 3.8-4.4 (25℃, 50mg/mL in H2O)
PH Range 3.8 - 4.4
Odor brilliant wh. cryst. or powd., odorless
Water Solubility  368 g/L (20 ºC)
λmax λ: 260 nm Amax: ≤0.059
λ: 280 nm Amax: ≤0.050
Merck  14,543
CAS DataBase Reference 7722-76-1(CAS DataBase Reference)
EPA Substance Registry System Monoammonium phosphate (7722-76-1)

Safety information for Ammonium dihydrogen phosphate

Signal word Warning
Pictogram(s)
ghs
Exclamation Mark
Irritant
GHS07
GHS Hazard Statements H315:Skin corrosion/irritation
H319:Serious eye damage/eye irritation
H335:Specific target organ toxicity, single exposure;Respiratory tract irritation
Precautionary Statement Codes P261:Avoid breathing dust/fume/gas/mist/vapours/spray.
P304+P340:IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.
P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
P405:Store locked up.

Computed Descriptors for Ammonium dihydrogen phosphate

InChIKey LFVGISIMTYGQHF-UHFFFAOYSA-N

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