5-[(2,4,6-trioxohexahydropyrimidin-5-yl)imino]pyrimidine-2,4,6(1H,3H,5H)-trione ammoniate
Purpuric Acid, Ammonium Salt
CAS: 3051-09-0
Molecular Formula: C8H8N6O6
5-[(2,4,6-trioxohexahydropyrimidin-5-yl)imino]pyrimidine-2,4,6(1H,3H,5H)-trione ammoniate - Names and Identifiers
| Name | Purpuric Acid, Ammonium Salt |
| Synonyms | Murexide AMMONIUM PURPURATE AMMONIUM PERPURATE AMMONIUM PURPURATE ACID MUREXIDE A.C.S. REAGENT Purpuric Acid, Ammonium Salt 5,5'-NITRILODIBARBITURIC ACID MONOAMMONIUM SALT ammonium 5-(2,4,6-trioxoperhydropyrimidin-5-ylideneamino)barbiturate Acid ammonium purpurate,Ammonium purpurate,5,5'-Nitrilodibarbituric acid ammonium salt 5-[(2,4,6-trioxohexahydropyrimidin-5-yl)imino]pyrimidine-2,4,6(1H,3H,5H)-trione ammoniate ammonium 2,6-dioxo-5-[(2,4,6-trioxotetrahydropyrimidin-5(2H)-ylidene)amino]-1,2,3,6-tetrahydropyrimidin-4-olate |
| CAS | 3051-09-0 |
| EINECS | 221-266-6 |
| InChI | InChI=1/C8H5N5O6.H3N/c14-3-1(4(15)11-7(18)10-3)9-2-5(16)12-8(19)13-6(2)17;/h1H,(H2,10,11,14,15,18)(H2,12,13,16,17,19);1H3 |
| InChIKey | HZRQHQKDQSVFMQ-UHFFFAOYSA-N |
5-[(2,4,6-trioxohexahydropyrimidin-5-yl)imino]pyrimidine-2,4,6(1H,3H,5H)-trione ammoniate - Physico-chemical Properties
| Molecular Formula | C8H8N6O6 |
| Molar Mass | 284.19 |
| Density | 1.5756 (rough estimate) |
| Melting Point | 300 °C |
| Boling Point | 443.25°C (rough estimate) |
| Flash Point | 270.2°C |
| Water Solubility | Slightly soluble |
| Solubility | 1g/l |
| Vapor Presure | 4.81E-11mmHg at 25°C |
| Appearance | Dark red or purple powder |
| Color | Reddish-violet |
| Odor | Odorless |
| Merck | 14,6306 |
| BRN | 3582175 |
| pKa | pK1:0.0;pK2:9.20;pK3:10.50 (25°C) |
| PH | 5 (1g/l, H2O, 20℃) |
| Storage Condition | no restrictions. |
| Sensitive | Sensitive to light |
| Refractive Index | 1.8000 (estimate) |
| MDL | MFCD00012777 |
| Physical and Chemical Properties | Red-purple powder. It can form various color complexes with many cations, and its aqueous solution is dark purple, dark blue in alkaline solution, such as red in combination with calcium ions, and colorless in acidic solution. Slightly soluble in cold water, aqueous solution is easy to deteriorate, insoluble alcohol and ether. |
| Use | For the determination of calcium, cobalt, copper, manganese, nickel, scandium, zinc and other complex indicator |
5-[(2,4,6-trioxohexahydropyrimidin-5-yl)imino]pyrimidine-2,4,6(1H,3H,5H)-trione ammoniate - Risk and Safety
| Hazard Symbols | Xn - Harmful |
| Risk Codes | R22 - Harmful if swallowed R40 - Limited evidence of a carcinogenic effect |
| Safety Description | S24/25 - Avoid contact with skin and eyes. S22 - Do not breathe dust. S36/37 - Wear suitable protective clothing and gloves. |
| WGK Germany | 3 |
| TSCA | Yes |
| HS Code | 29335995 |
5-[(2,4,6-trioxohexahydropyrimidin-5-yl)imino]pyrimidine-2,4,6(1H,3H,5H)-trione ammoniate - Introduction
Soluble in water, insoluble in ethanol, its aqueous solution is dark purple, and its alkaline solution (sodium hydroxide or potassium hydroxide) is dark blue.
Last Update：2022-10-16 17:24:27
5-[(2,4,6-trioxohexahydropyrimidin-5-yl)imino]pyrimidine-2,4,6(1H,3H,5H)-trione ammoniate - Reference Information
| color index | 56085 |
| NIST chemical information | Information provided by: webbook.nist.gov (external link) |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| uses | complexing index agent for the determination of calcium, cobalt, copper, manganese, nickel, scandium, zinc, etc. Used as a complexing indicator for the determination of calcium, cobalt, copper, manganese, nickel, scandium, zinc, etc. |
| production method | 10g of chromium trioxide, 4g of water and 40g of glacial acetic acid are heated and dissolved, cooled to 30 ℃, 16g of barto acid is slowly added in batches, and the reaction temperature is controlled to 45-50 ℃. After the addition, keep the temperature at 50 ℃ for half an hour, leave it overnight, add 10g of glacial acetic acid, and filter the crystals. 4g of crystals and 8g of water were mixed and heated to dissolve, and the insoluble matter was filtered out. The filtrate is transferred into the ammonium acetate-glacial acetic acid solution to pass ammonia, precipitate crystallization, filter, and wash with boiling ethanol to obtain ammonium purate. |
Last Update：2024-04-09 21:21:28
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5-[(2,4,6-trioxohexahydropyrimidin-5-yl)imino]pyrimidine-2,4,6(1H,3H,5H)-trione ammoniate
321979-13-9
321979-13-9