5341-61-7
Hydrazine dihydrochloride
CAS: 5341-61-7
Molecular Formula: Cl2H6N2
5341-61-7 - Names and Identifiers
| Name | Hydrazine dihydrochloride |
| Synonyms | Hydrazine dihydrochl HydrazinumDichloride Hydrazine dihydrochloride ammonium chloride ammoniate Hydrazinium dichloride for synthesis hydrazine dihydrochloride H4N2.2(HCl) |
| CAS | 5341-61-7 |
| EINECS | 226-283-2 |
| InChI | InChI=1/ClH.2H3N/h1H;2*1H3 |
5341-61-7 - Physico-chemical Properties
| Molecular Formula | Cl2H6N2 |
| Molar Mass | 104.97 |
| Density | 1.42g/mLat 25°C(lit.) |
| Melting Point | 200°C (dec.)(lit.) |
| Boling Point | 200 °C |
| Flash Point | 200°C |
| Water Solubility | SOLUBLE |
| Solubility | water: soluble(lit.) |
| Vapor Presure | 7.51mmHg at 25°C |
| Appearance | white orthorhombic crystals |
| Specific Gravity | 1.42 |
| Color | White crystalline |
| Merck | 14,4770 |
| PH | 0.5 (50g/l, H2O, 20℃) |
| Storage Condition | Store below +30°C. |
| Stability | Stable. Incompatible with most common metals, organic materials, strong bases, strong oxidizing agents. |
5341-61-7 - Risk and Safety
| Risk Codes | R45 - May cause cancer R23/24/25 - Toxic by inhalation, in contact with skin and if swallowed. R43 - May cause sensitization by skin contact R50/53 - Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. |
| Safety Description | S53 - Avoid exposure - obtain special instructions before use. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S60 - This material and its container must be disposed of as hazardous waste. S61 - Avoid release to the environment. Refer to special instructions / safety data sheets. |
| UN IDs | UN 2811 6.1/PG 3 |
| WGK Germany | 3 |
| RTECS | MV2298000 |
| FLUKA BRAND F CODES | 3-10-21 |
| TSCA | Yes |
| HS Code | 2825 10 00 |
| Hazard Class | 6.1 |
| Packing Group | II |
| Toxicity | LD50 orally in Rabbit: 129 mg/kg LD50 dermal Rabbit 91 mg/kg |
5341-61-7 - Reference Information
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| use | reducing agent, organic synthesis, chlorine purifying agent in hydrogen chloride gas stream. |
| Production method | 1. Hydrazine sulfate is reacted with barium chloride to prepare hydrazine dihydrochloride. Dissolve 50g of N2H4 · H2SO4 in 150mL of water and heat the solution to boiling. 93.9g of BaCl2 · 2H2O were dissolved in 150mL of water and heated. This hot solution is added to N2H4 · H2SO4 solution under stirring, and BaSO4 precipitate is precipitated. Boil the precipitated solution for several minutes and then cool down to 30~40 ℃. After the solution is clarified, check whether the precipitation is complete. If precipitation occurs when BaCl2 solution is added to the liquid sample, the reaction solution is heated and BaCl2 solution is added drop by drop until no precipitation is generated. If there is Ba2 in the solution (tested with H2SO4), add a few drops of dilute H2SO4 to make it completely precipitate. The solution is then filtered and the precipitate is washed with water. The resulting filtrate is combined with the washing liquid in a water bath to evaporate until crystallization begins to form, and the precipitated N2H4 · 2HCl crystals are filtered on a Brinell funnel and then dried in a dryer filled with CaCl2. Output 35g (yield 86%) If the mother liquor is evaporated, some products can be obtained. 2. Under 60 ℃, stir continuously and slowly add hydrochloric acid (d = 1.19) to 160g of hydrazine hydrate until Congo red is acidic. The amount of acid is about 320mL. Add the same amount of hydrochloric acid to the solution and let stand at 20 ℃ for 8 hours. The precipitated crystals were pumped out with a Brinell funnel and washed 3 times with cold water, 50mL each time. Finally, dry at no more than 40°C. Yield 180g (yield 52%). 3. Add hydrochloric acid to hydrazine hydrate to salt, and control the temperature not to exceed 60 ℃. The resulting crystallization can be refined by recrystallization with water |
Last Update：2024-04-10 22:29:15
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