3458-72-8
Ammonium Citrate Tribasic
CAS: 3458-72-8
Molecular Formula: C6H8O7.3H3N
3458-72-8 - Names and Identifiers
3458-72-8 - Physico-chemical Properties
| Molecular Formula | C6H8O7.3H3N |
| Molar Mass | 243.21 |
| Density | 1 g/mL at 25 °C (lit.) |
| Melting Point | 185 °C (dec.) (lit.) |
| Boling Point | 100 °C (lit.) |
| Flash Point | 197.6°C |
| Water Solubility | Soluble in water. Slightly soluble in alcohol. |
| Solubility | H2O: 1M at20°C, clear, colorless |
| Vapor Presure | 0Pa at 25℃ |
| Vapor Density | 1.8 (vs air) |
| Appearance | Crystals |
| Color | White to off-white |
| BRN | 3779194 |
| PH | 7.5(1 mM solution);7.4(10 mM solution);7.32(100 mM solution);8.18(1000 mM solution) |
| Storage Condition | Inert atmosphere,Room Temperature |
| Stability | Stable. Incompatible with strong oxidizing agents. |
| Refractive Index | 1.583 |
| Physical and Chemical Properties | Density 1.00 melting point 185°C (dec.) |
| Use | For the determination of phosphate in fertilizers, also used as a complexing reagent |
3458-72-8 - Risk and Safety
| Hazard Symbols | Xi - Irritant |
| Risk Codes | R36/37 - Irritating to eyes and respiratory system. R36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. |
| WGK Germany | 3 |
| RTECS | GE7545000 |
| FLUKA BRAND F CODES | 8 |
| TSCA | Yes |
| HS Code | 29181500 |
3458-72-8 - Upstream Downstream Industry
| Raw Materials | Citric acid Ammonia |
3458-72-8 - Reference Information
| LogP | -1.43 at 25℃ |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| production process | method 1: a preparation method with high utilization rate of raw materials, simple preparation process, low production energy consumption and pollution-free ammonium citrate: a. citric acid and liquid ammonia are used as raw materials; B. citric acid is added with water to prepare citric acid aqueous solution with 30% concentration; c. direct ammonolysis of citric acid aqueous solution with liquid ammonia; d. control the ammonia feeding speed and flow rate, and concentrate the material by using the neutralization heat and vacuum of the reaction, so that the concentration temperature of the material is 65 ℃, and the pH value at the end of ammonolysis is 6.6 e. cooling crystallization, centrifugal separation, drying, and one-time mother liquor can be recycled. f. place the secondary and above mother liquor in a neutralization tank, adjust the pH value of the mother liquor to 7.0 in the neutralization tank, add oxidant according to the impurity content in the mother liquor, carry out oxidation and decolorization, add a small amount of activated carbon to adsorb and decolorize at the same time, then remove iron and heavy metal ions with ammonium sulfide, control the material temperature at about 60 ℃ in the whole process of impurity removal and decolorization, and filter. g. the filtrate obtained in step f is fed into the concentration tank for vacuum concentration, cooling crystallization, centrifugal separation and drying to obtain anhydrous ammonium citrate product. method 2: a preparation method with high utilization rate of raw materials, simple preparation process, low production energy consumption and pollution-free ammonium citrate: a. citric acid and liquid ammonia are used as raw materials; B. directly put citric acid raw materials into a concentrated tank, and add water to prepare citric acid aqueous solution with 20% concentration; c. direct ammonolysis of citric acid aqueous solution with liquid ammonia; d. control the rate and flow rate of ammonia, and use the neutralization heat of the reaction to concentrate the material in vacuum, so that the concentration temperature of the material is 60 ℃, and the pH value at the end of ammonolysis is 6.5; e. cooling crystallization, centrifugal separation and drying; f. the primary mother liquor is directly recycled, and the production process is the same as above. g. place the secondary and above mother liquor in a neutralization tank, adjust the pH value of the mother liquor to 7.0 in the neutralization tank, add oxidant according to the impurity content in the mother liquor, carry out oxidation decolorization, add a small amount of activated carbon to adsorb decolorization at the same time, and then remove iron and heavy metal ions with ammonium sulfide, during the whole impurity removal and decolorization process, the material temperature is controlled at about 60 ℃ and filtered. h. the ground filtrate obtained in step g is fed into the concentration tank for vacuum concentration, cooling crystallization, centrifugal separation and drying to obtain anhydrous ammonium citrate product. |
| application | 1. induction of paclitaxel biosynthesis pathway under the induction of 0,0.1,1,10,20 μmol/L ammonium citrate, respectively, the yield changes of taxanes were observed and qualitatively analyzed through biological metabolic pathways. The results showed that under the induction of 10 μmol/L ammonium citrate, the yield of paclitaxel increased nearly 3 times, while the concentrations of 10-DAB and baccatin III decreased, showing a certain degree of negative correlation with the concentration of paclitaxel. Through kinetic analysis, it is pointed out that the addition of ammonium citrate improves the reaction speed from baccatin Ⅲ to paclitaxel. 2. Effect of propylene triol cyanide-free copper plating process Through polarization curve analysis, Hull tank test and coating and bath performance test, the effect of additive ammonium citrate on propylene triol alkaline cyanide-free copper plating process was studied. The results show that the addition of ammonium citrate can improve the stability of the plating solution, increase the cathode polarization, widen the cathode current density range to 0. 11~1. 54A /dm2, and the cathode current efficiency is as high as 95.6%. The obtained coating is fine, uniform and has good bonding force, which provides a new idea for replacing cyanide copper plating. 3. Preparation of solid soil improver A solid soil improver containing titanium citrate and ammonium citrate and its application. The solid soil improver consists of the following raw materials in parts by weight: 8-16 parts of titanium citrate, 15-25 parts of ammonium citrate, 12-20 parts of modified starch, 1-5 parts of Haijinsha and 3-10 parts of dimethyl sulfoxide. The solid soil improver produced by the invention can not only improve the soil structure and prevent soil hardening, but also supplement the organic matter of the soil under the synergistic effect of each raw material. While improving the acidic soil, the soil-borne diseases of tobacco leaves were comprehensively controlled, which greatly reduced the incidence rate and delayed the onset time. It can also significantly increase the yield of tobacco leaves and increase economic benefits. The preparation method of the invention is simple, the raw materials are easy to obtain, the cost is low, and it is suitable for factory production. |
| The characteristics and uses of triammonium citrate | Triammonium citrate (English Ammonium Citrate) is also called ammonium citrate, triammonium citrate, ammonium citrate, It is a white crystalline powder with an ammonia taste, soluble in water and acid, and the aqueous solution is acidic, hardly soluble in ethanol, ether and acetone. Easy deliquescence, decomposed when heated to the melting point, non-toxic. Citric acid monohydrate is used as raw material and refined and extracted. Mainly used in chemical analysis (such as determination of phosphate in fertilizer), industrial water treatment, metal cleaning, cyanide-free electroplating complexing agent, ceramic dispersant, detergent raw materials, and soil amendment components. |
| content analysis | accurately weigh about 3.5g of sample, dissolve in 50ml of water, add 50ml of lmol/L sodium hydroxide, boil for 15min or until no ammonia gas escapes, add enough lmol/L sulfuric acid to make the solution acidic to phenolphthalein test solution (TS-167), boil for 5min, cool, titrate with lmol/L sodium hydroxide, phenolphthalein test solution was used as indicator. Sodium hydroxide per mL lmol/L is equivalent to ammonium citrate (C6H17N3O7)81.07mg. |
| toxicity | solubility soluble in water. Measured according to OT-42 method. The citrate test (IT-13) was positive. The ammonium test (IT-3) was positive. |
| usage limit | ADI does not make special regulations (FAO/WHO,2001). |
| Use | Used for the determination of phosphate in fertilizers, and also used as a complexing reagent Its aqueous solution can determine phosphate and effective phosphoric acid in fertilizers. Used as a complexing agent. |
| production method | is obtained by the interaction of citric acid and ammonia. |
Last Update：2024-04-09 21:21:28
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