631-61-8
Acetic acid, ammonium salt
CAS: 631-61-8
Molecular Formula: C2H7NO2
631-61-8 - Names and Identifiers
| Name | Acetic acid, ammonium salt |
| Synonyms | Ammonium acetate acetated'ammonium Mindererus's spirit Acetic acid ammonium salt Acetic acid, ammonium salt AMMONIUM ACETATE BIO-REFINED AMMONIUM ACETATE, REAGENT (ACS) Ammonium acetate solution, 7.5 M AmmoniumacetateanhydrousACSwhitextl |
| CAS | 631-61-8 |
| EINECS | 211-162-9 |
| InChI | InChI=1/C2H4O2.H3N/c1-2(3)4;/h1H3,(H,3,4);1H3 |
| InChIKey | USFZMSVCRYTOJT-UHFFFAOYSA-N |
631-61-8 - Physico-chemical Properties
| Molecular Formula | C2H7NO2 |
| Molar Mass | 77.08 |
| Density | 1.07g/mLat 20°C |
| Melting Point | 110-112 °C (dec.) (lit.) |
| Boling Point | 138.46°C (rough estimate) |
| Flash Point | 136 °C |
| Water Solubility | 1480 g/L (20 ºC) |
| Solubility | H2O: 1M at20°C, clear, colorless |
| Vapor Presure | 0.017-0.02Pa at 25℃ |
| Appearance | White crystal |
| Color | White |
| Odor | Slight acetic acid odor |
| Maximum wavelength(λmax) | ['λ: 260 nm Amax: 0.015', , 'λ: 280 nm Amax: 0.01'] |
| Merck | 14,495 |
| BRN | 4186741 |
| pKa | 4.6(Acetic Acid), 9.3(Ammonium Hydroxide)(at 25℃) |
| PH | 7(1 mM solution);7(10 mM solution);7(100 mM solution);6.95(1000 mM solution) |
| Storage Condition | Store at +15°C to +25°C. |
| Stability | Hygroscopic |
| Sensitive | Hygroscopic |
| Refractive Index | 1.4350 (estimate) |
| MDL | MFCD00013066 |
| Physical and Chemical Properties | Density 1.07 melting point 110-112°C flash point 136°C water-soluble 1480g/L (20°C) |
| Use | Used for meat preservation, electroplating, water treatment, pharmaceutical, etc |
631-61-8 - Risk and Safety
| Hazard Symbols | F - Flammable T - Toxic  |
| Safety Description | 24/25 - Avoid contact with skin and eyes. |
| UN IDs | UN 9079 |
| WGK Germany | 3 |
| RTECS | AF3675000 |
| FLUKA BRAND F CODES | 3 |
| TSCA | Yes |
| HS Code | 29152900 |
| Toxicity | LD i.v. in mice: 1.8 mg (NH4+)/20g (Welch) |
631-61-8 - Upstream Downstream Industry
| Raw Materials | Acetic acid |
631-61-8 - Reference
| Reference Show more | 1. Qiu Hua-zhen, Yang Yi-jin, Hu Jian, etc. Study on color-protecting effect of alcohol extract of Lonicera Japonica on water-soluble Monascus pigment [J]. Science and Technology of food industry, 2019(15):178-183. 2. [IF = 4.821] Yixin Xie et al."Nitrogen-rich quantum dots-based fluorecence molelly imputable paper strip for p-nitroaniline detection." Microchem J. Jul 148:162 |
631-61-8 - Nature
Open Data Verified Data
White triangular crystals with a slight odor of acetic acid. Soluble in water and ethanol, insoluble in acetone, neutral aqueous solution.
Last Update：2024-01-02 23:10:35
631-61-8 - Preparation Method
Open Data Verified Data
obtained by the reaction of glacial acetic acid and ammonia.
Last Update：2022-01-01 09:24:52
631-61-8 - Introduction
Easily deliquescent, easily soluble in water and alcohol.
Last Update：2022-10-16 17:27:31
631-61-8 - Use
Open Data Verified Data
It is used as an analytical reagent, a meat preservative, and also used in the pharmaceutical industry.
Last Update：2022-01-01 09:24:53
631-61-8 - Safety
Open Data Verified Data
mice were injected intravenously with LD:1.8mg(NH4 )/20g.
Last Update：2022-01-01 09:24:53
631-61-8 - Reference Information
| pH range of acid-base indicator discoloration | 6.7 - 7.3 |
| LogP | -2.79 |
| NIST chemical information | information provided by: webbook.nist.gov (external link) |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Overview | ammonium acetate is also known as "ammonium acetate". Chemical formula NH4C2H3O2. Molecular weight 77.08. White crystals. The melting point of 114 deg C, the relative density of 1.17. Decomposition in high temperature and hot water. Soluble in ethanol, soluble in water, slightly soluble in acetone. Ammonia is easily lost in the air. By the role of glacial acetic acid and ammonia derived. Over the years, with the development of the pharmaceutical industry, high purity, low water ammonium acetate demand increased dramatically. At present, ammonium acetate is analytically pure, excellent grade pure, pharmaceutical grade and industrial grade, far less than the requirements of the pharmaceutical industry. The reason is that the content is low (97%-98%), the pH range is not satisfactory, the water content is high, the water is easily deliquescent, and the storage is difficult. Once the hygroscopic water is absorbed in the storage process, the product cannot be treated twice at all, and is discarded because it cannot be used continuously, resulting in a large amount of waste and serious pollution to the environment. According to the analysis, the reason why ammonium acetate is very easy to absorb moisture is that the finished ammonium acetate product contains a certain amount of water, even if it is analytically pure, excellent grade pure and reagent grade, the water content is about 2%-3%, therefore, it is very easy to absorb moisture during storage and use, so it is urgent to study the preparation of high purity and low water ammonium acetate. |
| Application | ammonium acetate (ammonium acetate) as analytical reagent, diuretic, buffer and used in the printing and dyeing industry. 1) purified chymotrypsin, which is characterized in that the crude chymotrypsin (active ingredient less than 10%) is extracted with ammonium acetate solution at 5-15 ℃, and then precipitated with organic solvent ethanol, finally, the chymotrypsin intermediate was dehydrated with acetone. 2) purified urotropin, characterized in that the crude urotropin (active ingredient less than 10%) is extracted with ammonium acetate solution, ethanol precipitated, and finally dehydrated with acetone to obtain the purified urotropin. |
| preparation | a new process for the synthesis of high purity and low water ammonium acetate (ammonium acetate), including the following steps:(1) put 240-250KG of high purity glacial acetic acid (purity 99.6%) into the reaction kettle, add 10-100g of dehydrating agent (dehydrating agent is a compound containing carbonyl group), stir and heat at 50±5 ℃;(2) under stirring, slowly add 100-110kg high purity ammonium carbonate (purity 99.9%), dissolve, hot filter;(3) filtrate temperature to 35±5 ℃, maintain 4H;(4) crystal spin drying;(5) spin drying of crystals, under tumbling, 10-30kg of dehydrating agent (the dehydrating agent is a carbonyl-containing compound) was added by spraying, and spin-dried;(6) The crystals were spin-dried again, and vacuum spin-dried at 45±5 ° C. For 0.5-1H. |
| Use | is used as an analytical reagent, a chromatography reagent and a buffer. Also used in meat preservation, electroplating, water treatment, pharmaceutical, etc. used to prepare buffer and measure aluminum and iron. Separation of lead sulfate from other sulfates. |
| category | toxic substances |
| toxicity grade | poisoning |
| Acute toxicity | intraperitoneal-rat LD50: 632 mg/kg; Intravenous-mouse LD50: 386 mg/kg |
| flammability hazard characteristics | flammability; Toxic nitrogen oxides and ammonia smoke from combustion |
| storage and transportation characteristics | warehouse ventilation and low temperature drying |
| fire extinguishing agent | dry powder, foam, sand, carbon dioxide, water mist |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-10 22:29:15
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