bpy
2,2'-Dipyridyl
CAS: 366-18-7
Molecular Formula: C10H8N2
bpy - Names and Identifiers
| Name | 2,2'-Dipyridyl |
| Synonyms | bpy 2,2-Bipyridyl 2'-Bipyridine 2,2-Dipyridyl 2,2'-Dipyridyl 2,2-Dipyridine 2,2-Bipyridine 2,2'-Bipyridine 2,6'-Bipyridine 2,2-Bispyridine 2,2'-Dipyridyl p.a. BipyridineBIPYwhiteoffwhitextl α,α'-Dipyridyl, 2,2'-Dipyridyl 2,2'-BIPYRIDINE (2,2'-Bipyridyl) |
| CAS | 366-18-7 |
| EINECS | 206-674-4 |
| InChIKey | ROFVEXUMMXZLPA-UHFFFAOYSA-N |
bpy - Physico-chemical Properties
| Molecular Formula | C10H8N2 |
| Molar Mass | 156.18 |
| Density | 1.1668 (rough estimate) |
| Melting Point | 70-73°C(lit.) |
| Boling Point | 273°C(lit.) |
| Flash Point | 121 °C |
| Water Solubility | 5.5 g/L 22 ºC |
| Solubility | Soluble in ethanol, ether, benzene, chloroform and petroleum ether, slightly soluble in water. |
| Vapor Presure | 0.584Pa at 25℃ |
| Appearance | White crystalline powder |
| Color | White to almost white |
| Odor | Characteristic odour |
| Merck | 14,3347 |
| BRN | 113089 |
| pKa | pK1:-0.52(+2);pK2:4.352(+1) (20°C) |
| PH | 7.5 (5g/l, H2O, 25℃) |
| Storage Condition | room temp |
| Stability | Stable. Incompatible with strong oxidizing agents, most common metals. May be light sensitive. |
| Sensitive | Sensitive to light |
| Refractive Index | 1.4820 (estimate) |
| MDL | MFCD00006212 |
| Physical and Chemical Properties | appearance white or light red crystalline powder |
| Use | For organic synthesis, pharmaceutical intermediates |
bpy - Risk and Safety
| Risk Codes | R25 - Toxic if swallowed R36/37/38 - Irritating to eyes, respiratory system and skin. R20/21 - Harmful by inhalation and in contact with skin. R23/24/25 - Toxic by inhalation, in contact with skin and if swallowed. R21 - Harmful in contact with skin |
| Safety Description | S36/37 - Wear suitable protective clothing and gloves. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. |
| UN IDs | UN 2811 6.1/PG 3 |
| WGK Germany | 3 |
| RTECS | DW1750000 |
| FLUKA BRAND F CODES | 8 |
| TSCA | Yes |
| HS Code | 29333999 |
| Hazard Note | Irritant |
| Hazard Class | 6.1 |
| Packing Group | III |
| Toxicity | LD50 i.p. in mice: 200 mg/kg (Grady) |
bpy - Nature
Open Data Verified Data
white or light pink crystalline powder. mp69.7 deg C; bp272 ~ 273 deg C. Soluble in ethanol, ether, benzene, chloroform, petroleum ether, soluble in about 2000 parts of water, the solution of ferrous salt is red.
Last Update：2024-01-02 23:10:35
bpy - Preparation Method
Open Data Verified Data
anhydrous pyridine was mixed with anhydrous ferric chloride, reacted by heating, and solidified by cooling to give red-black crystals. The excess pyridine was removed by steam heating. The 2, 2 '-dipyridinium was distilled off. Sodium hydroxide was added and ether was used as solvent to remove ether to obtain crude product. Decolorized with iron-free activated carbon, filtered to obtain white leaf-like crystals, I .e., pure 2,2 '-associated pyridinium.
Last Update：2022-01-01 09:26:13
bpy - Introduction
1 part of this product is dissolved in about 200 parts of water. The solution is red when it meets ferrous salt.
Last Update：2022-10-16 17:24:54
bpy - Use
Open Data Verified Data
redox indicators and reagents for the determination of ferrous, cadmium and molybdenum.
Last Update：2022-01-01 09:26:13
bpy - Safety
Open Data Verified Data
mice were injected intraperitoneally with LD50:200mg/kg. The warehouse is ventilated and dried at low temperature; It is stored separately from food raw materials.
Last Update：2022-01-01 09:26:13
bpy - Reference Information
| NIST chemical information | Information provided by: webbook.nist.gov (external link) |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| Uses | Used as redox indicator and analytical reagent Used in organic synthesis, pharmaceutical intermediates Organic synthesis, pharmaceutical intermediates. The electroless copper plating additive, used in conjunction with potassium ferrocyanide, can effectively control the copper deposition rate and avoid the formation of cuprous oxide. Organic synthesis, pharmaceutical intermediates. Electroless copper plating additives, used in conjunction with potassium ferrocyanide, can effectively control the copper deposition rate and avoid the formation of cuprous oxide. This product is an analytical reagent, used to verify ferrous iron, silver, cadmium, and molybdenum, as a redox indicator used for transition metal catalysis and aluminum-initiated polymerization reactions; used as a metalloproteinase inhibitor and high-affinity iron chelating agent |
| Production method | is obtained by the reaction of pyridine and ferric chloride. 70g of anhydrous pyridine and 13g of anhydrous ferric chloride were mixed and heated at 300 ℃ for about 35h in a sealed tube. After cooling, the reactants solidified into red-black crystals, opened the sealed tube, and washed out the solid red-black solution with a small amount of hot water. Extraction with ether to remove oily impurities. After neutralization with sodium bicarbonate, excess pyridine is removed by heating with steam. Then the mixture is adjusted to be strongly alkaline and 2,2 '-bipyridine is steamed out with steam. After the distilled product is acidified, evaporated and concentrated, added with sodium hydroxide, extracted with ether, and removed the ether to obtain crude product. Crude products are recrystallized with B and decolorized with activated carbon to obtain pure products. In addition, the product can be prepared by reacting α-methylpyridine [109-06-8] with potassium permanganate and purifying. |
| category | pesticide |
| toxicity classification | highly toxic |
| acute toxicity | oral administration-rat LD50: 100 mg/kg; Abdominal cavity-mouse LD50:200 mg/kg |
| flammability hazard characteristics | combustible; combustion produces toxic nitrogen oxide smoke |
| storage and transportation characteristics | warehouse ventilation and low temperature drying; separate from food raw materials |
| fire extinguishing agent | dry powder, foam, sand, carbon dioxide, mist water |
| occupational standard | TWA STEL |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-09 15:16:50
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