N,N-DIMETHYL-P-PHENYLENEDIAMINE HYDROCHLORIDE
N,N-Dimethyl-p-phenylenediamine dihydrochloride
CAS: 536-46-9
Molecular Formula: C8H13ClN2
N,N-DIMETHYL-P-PHENYLENEDIAMINE HYDROCHLORIDE - Names and Identifiers
N,N-DIMETHYL-P-PHENYLENEDIAMINE HYDROCHLORIDE - Physico-chemical Properties
| Molecular Formula | C8H13ClN2 |
| Molar Mass | 172.66 |
| Melting Point | 222°C (dec.)(lit.) |
| Boling Point | 262°C at 760 mmHg |
| Flash Point | 88.6°C |
| Water Solubility | Soluble in water |
| Solubility | 2000g/l |
| Vapor Presure | 0.0112mmHg at 25°C |
| Appearance | Powder |
| Color | White to beige to gray |
| Merck | 14,3254 |
| BRN | 3913463 |
| PH | 1.6 (50g/l, H2O, 20℃) |
| Storage Condition | Keep in dark place,Inert atmosphere,Room temperature |
| Use | For the Colorimetric Determination of hydrogen sulfide and sulfide and the detection of vanadium |
N,N-DIMETHYL-P-PHENYLENEDIAMINE HYDROCHLORIDE - Risk and Safety
| Hazard Symbols | T - Toxic |
| Risk Codes | R23/24/25 - Toxic by inhalation, in contact with skin and if swallowed. R43 - May cause sensitization by skin contact |
| 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.) |
| UN IDs | UN 2811 6.1/PG 2 |
| WGK Germany | 3 |
| RTECS | ST1750000 |
| FLUKA BRAND F CODES | 3-8-9 |
| TSCA | Yes |
| HS Code | 2921 51 90 |
| Hazard Class | 6.1 |
| Packing Group | III |
N,N-DIMETHYL-P-PHENYLENEDIAMINE HYDROCHLORIDE - Reference Information
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| introduction | N,N-dimethyl p-phenylenediamine hydrochloride is white to off-white crystalline powder, easy to absorb moisture. It gradually changes color when exposed to light and oxygen. Melting point 199 ℃. Easily soluble in water, ethanol, benzene and chloroform, slightly soluble in ether. Reacts with organic peroxides to produce purple-red products. |
| preparation | a preparation method of N,N-dimethyl-p-phenylenediamine hydrochloride, which comprises the following steps: (1) 1 mol of p-nitrochlorobenzene is dissolved in 400ml of toluene to obtain solution a; (2) 1.1 mol of dimethylamine hydrochloride is dissolved in 180ml of water, and solution a is added; (3) under stirring at 20~25 ℃, add 1.1 moles of 15% sodium hydroxide aqueous solution dropwise to the above solution, raise the temperature to 35 ℃, add 0.66 moles of 15% sodium hydroxide aqueous solution dropwise within 30 minutes, and then keep the temperature for 60 minutes; (4) standing still, phase separation, adding active nickel catalyst to toluene layer, hydrogenation reduction; (5) filtering separation catalyst; hydrogen chloride gas was introduced into toluene layer to obtain N,N-dimethyl p-phenylenediamine dihydrochloride precipitation. (6) centrifugation to obtain 198g of N,N-dimethyl p-phenylenediamine dihydrochloride with 99.7% content and 94.5% yield (calculated as p-chloronitrobenzene). |
| Use | Used as analytical reagent Used for colorimetric determination of hydrogen sulfide and sulfide and detection of vanadium, etc. Used for inspection and colorimetric determination of hydrogen sulfide, Sulfide; it can react with oxidant to form red in acidic solution, and is used as an indicator when chromate titrates barium salt; used for determination of vanadium; used to test oxidant with color reaction; used to verify chlorine, bromine, manganese and ozone (test paper) in the air; test oxidase in microscopic analysis; used to test acetone, uric acid, thallium salt, etc. |
Last Update：2024-04-09 21:11:58
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View History
N,N-DIMETHYL-P-PHENYLENEDIAMINE HYDROCHLORIDE
Fmoc-L-alanine succinimidyl ester
5-Oxazolecarboxylic acid methyl ester
3-BROMO-5-CHLOROTOLUENE
八氢-吡咯并[3,4-B]吡咯
(7-溴-1H-吲哚-2-基)硼酸
Fmoc-L-alanine succinimidyl ester
5-Oxazolecarboxylic acid methyl ester
3-BROMO-5-CHLOROTOLUENE
八氢-吡咯并[3,4-B]吡咯
(7-溴-1H-吲哚-2-基)硼酸