Name | Methylamine |
Synonyms | CH3NH2 Methylamin Methylamine mercurialin Carbinamine Aminomethan methanamine Methanamine Aminomethane Monomethylamine methylamine(mono) anhydrousmethylamine Monomethylamine anhydrous methylamine(non-specificname) |
CAS | 74-89-5 |
EINECS | 200-820-0 |
InChI | InChI=1/CH5N/c1-2/h2H2,1H3 |
Molecular Formula | CH5N | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Molar Mass | 31.06 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Density | 0.785g/mLat 25°C | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Melting Point | -93°C(lit.) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Boling Point | -6.3°C(lit.) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Flash Point | 61°F | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Water Solubility | Miscible with water, ethanol, benzene, acetone and ether. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Solubility | highly soluble in water (108g/100g) at 25°C; soluble in alcohol andmiscible with ether; HCl salt is soluble in water and absolute alcohol; compoundis insoluble in chloroform, acetone, ether, and ethyl acetate | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Vapor Presure | 27 psi ( 20 °C) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Vapor Density | 1.08 (20 °C, vs air) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Appearance | Gas | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Specific Gravity | 0.901 (20℃/4℃) (40% Soln.) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Exposure Limit | TLV-TWA 10 ppm (~12.3 mg/m3)(ACGIH,MSHA, and OSHA); IDLH 100 ppm(NIOSH). | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Merck | 14,6014 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
BRN | 741851 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
pKa | 10.63(at 25℃) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
PH | 14 (H2O, 20°C) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Storage Condition | Store below +30°C. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Stability | Stable. Highly flammable. Note wide explosion limits. Incompatible with oxidizing agents, acids, alkalies, alkaline earth metals, copper and its alloys, zinc and its alloys. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Explosive Limit | 4.9-20.8% | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Refractive Index | n20/D 1.371 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Physical and Chemical Properties |
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Use | Used as basic organic chemical raw materials, also used in pesticide, pharmaceutical, textile and other industries |
Risk Codes | R12 - Extremely Flammable R20 - Harmful by inhalation R37/38 - Irritating to respiratory system and skin. R41 - Risk of serious damage to eyes R34 - Causes burns R20/22 - Harmful by inhalation and if swallowed. R11 - Highly Flammable R39/23/24/25 - R36/37/38 - Irritating to eyes, respiratory system and skin. R23/24/25 - Toxic by inhalation, in contact with skin and if swallowed. R40 - Limited evidence of a carcinogenic effect R19 - May form explosive peroxides |
Safety Description | S7 - Keep container tightly closed. S16 - Keep away from sources of ignition. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 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.) S29 - Do not empty into drains. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S3/7 - S3 - Keep in a cool place. S39 - Wear eye / face protection. S33 - Take precautionary measures against static discharges. |
UN IDs | UN 3286 3/PG 2 |
WGK Germany | 2 |
RTECS | PF6300000 |
FLUKA BRAND F CODES | 4.5-31 |
TSCA | Yes |
HS Code | 29211100 |
Hazard Class | 3 |
Packing Group | II |
Toxicity | LD50 orally in rats: 100-200 mg/kg (Kinney); LC50 in rats: 0.448 ml/l (Sarkar, Sastry) |
Downstream Products | 1-Methyl-2-pyrrolidinone N-Methyl acetoacetylamide 1,3-Dimethylurea dimethoate 2-Mercapto-1-methylimidazole Kathon 886 |
It is a colorless ammonia-odorous gas or liquid at room temperature. Soluble in water, ethanol and ether. The vapor can form an explosive mixture with air, and the explosion limit is 526 ~ 21% (4.95% ~ 20.7526). The relative density was 0.662. Melting Point -93.5 °c. Boiling point -6. 3 ~-6.7 °c. Decomposition temperature 250. Flash point (closed cup) 0. Spontaneous ignition point 430. Vapor pressure (25 °c) 202. The critical temperature is 156.9. The critical pressure is 4. 073kPa. Refractive index 351. 40%-methylamine aqueous solution boiling point 49.4 deg C. Point -9.94 °c. Relative density (d15.5) 0.904.
This product is mainly used as pesticide (dimethoate, chlordimeform, etc.), medicine (caffeine, ephedrine, etc, raw materials such as surface inhibitors, accelerators, developers, and solvents.