Products Categories
CAS No.: | 57-14-7 |
---|---|
Name: | 1,1-Dimethylhydrazine |
Article Data: | 64 |
Molecular Structure: | |
Formula: | C2H8N2 |
Molecular Weight: | 60.0989 |
Synonyms: | 1,1-Dimethylhydrazine;Dimazin;Dimazine;Heptyl;N,N-Dimethylhydrazine;NSC 60517;UDMH;Unsymmetrical dimethylhydrazine;as-Dimethylhydrazine;gem-Dimethylhydrazine;u-Dimethylhydrazine;unsym-Dimethylhydrazine; |
EINECS: | 200-316-0 |
Density: | 0.829 g/cm3 |
Melting Point: | -57.2 °C |
Boiling Point: | 63.9 °C at 760 mmHg |
Flash Point: | 1.1 °C |
Solubility: | miscible with water, ethanol, and kerosene |
Appearance: | clear colorless liquid with an ammonia-like odor |
Hazard Symbols: | F, T, N |
Risk Codes: | 45-11-23/25-34-51/53 |
Safety: | 53-45-61 |
Transport Information: | UN 1163 |
PSA: | 29.26000 |
LogP: | 0.12200 |
(5S,5aS,8aS)-5-(N',N'-Dimethyl-hydrazino)-1,3,7-trimethyl-5,5a,8a,9-tetrahydro-1H-pyrrolo[3,4-g]quinazoline-2,4,6,8-tetraone
A
1,3,7-Trimethyl-8a,9-dihydro-1H-pyrrolo[3,4-g]quinazoline-2,4,6,8-tetraone
B
1,1-dimethylhydrazine
Conditions | Yield |
---|---|
With hydrogenchloride In ethanol | A 92% B n/a |
1,1-dimethylhydrazine
Conditions | Yield |
---|---|
With (η5-C5Me5)Rh(2-pyridylphenyl)H; hydrogen In tetrahydrofuran at 23℃; under 3040.2 Torr; for 120h; Catalytic behavior; Reagent/catalyst; Inert atmosphere; Schlenk technique; | 87% |
Conditions | Yield |
---|---|
With hydrogenchloride; formaldehyd; paraformaldehyde; platinum | 78% |
Conditions | Yield |
---|---|
With titanium(III) chloride In water for 1h; Ambient temperature; | 70% |
With lithium aluminium tetrahydride; diethyl ether | |
With sodium hydroxide; aluminium |
1,1-dimethylhydrazine
Conditions | Yield |
---|---|
With cyclopentadienylchromiumtricarbonyl hydride; hydrogen In tetrahydrofuran at 23℃; under 3040.2 Torr; for 120h; Catalytic behavior; Reagent/catalyst; Inert atmosphere; Schlenk technique; | 15% |
Conditions | Yield |
---|---|
With ammonia | |
With ammonia; dimethyl amine at 35℃; under 9000.72 Torr; for 0.833333h; Product distribution; Further Variations:; educt/reagent ratios; | |
With sodium amide In kerosene | |
With tri-n-propylamine | |
With ammonium hydroxide at 25℃; pH=13; Kinetics; |
Conditions | Yield |
---|---|
With acetic acid; zinc | |
With sulfuric acid durch elektrolytische Reduktion an einer verzinnten Kupferkathode; |
N,N-dimethylcarbamoyl azide
1,1-dimethylhydrazine
Conditions | Yield |
---|---|
With xylene und Erhitzen des in Xylol unloeslichen Anteils des Reaktionsprodukts mit konz. Salzsaeure im Autoklaven auf 150grad; |
Conditions | Yield |
---|---|
at 170 - 250℃; |
The IUPAC name of this chemical is 1,1-dimethylhydrazine. With the CAS registry number 57-14-7 and EINECS 200-316-0, it is also named as Dimethylhydrazine unsymmetrical. The classification codes are Mutation data; Reproductive Effect; Tumor data. It is clear colorless liquid with an ammonia-like odor which is miscible with water, ethanol, and kerosene. It turns yellowish on exposure to air and absorbs oxygen and carbon dioxide. Moreover, this chemical is a powerful reducing agent and can exhibit high acute toxicity as a result of exposure by all routes. When heated to decomposition it emits highly toxic fumes of NOx. In addition, 1,1-Dimethylhydrazine should be sealed in the container and stored in the cool and dry place which must be away from oxidant and acids.
The other characteristics of this product can be summarized as: (1)ACD/LogP: -1.28; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): -3.85; (4)ACD/LogD (pH 7.4): -2.16; (5)ACD/BCF (pH 5.5): 1; (6)ACD/BCF (pH 7.4): 1; (7)ACD/KOC (pH 5.5): 1; (8)ACD/KOC (pH 7.4): 1; (9)#H bond acceptors: 2; (10)#H bond donors: 2; (11)#Freely Rotating Bonds: 1; (12)Polar Surface Area: 6.48 Å2; (13)Index of Refraction: 1.426; (14)Molar Refractivity: 18.57 cm3; (15)Molar Volume: 72.4 cm3; (16)Polarizability: 7.36×10-24 cm3; (17)Surface Tension: 27.8 dyne/cm; (18)Density: 0.829 g/cm3; (19)Flash Point: 1.1 °C; (20)Enthalpy of Vaporization: 30.6 kJ/mol; (21)Boiling Point: 63.9 °C at 760 mmHg; (22)Vapour Pressure: 168 mmHg at 25°C.
Preparation of 1,1-Dimethylhydrazine: It can be obtained by the reaction of ammonia, ammonium chloride and dimethylamine. First, we can get chloro amine by ammonia and sodium hypochlorite. Secondly, the reaction of chloro amine and dimethylamine aqueous solution can generate UDMH solution. Finally, after a series of treatment, we can get the product.
NH3+NaOCl→NH2Cl+NaOH
NH2Cl+HN(CH3)3+NaOH→(CH3)2NNH2+NaCl+H2O
Uses of 1,1-Dimethylhydrazine: It is often used in hypergolic rocket fuels as a bipropellant in combination with the oxidizer nitrogen tetroxide and less frequently with IRFNA (red fuming nitric acid) or liquid oxygen. It is also used in the production of plant growth regulator. What's more, this chemical is used as fuel additive and used in organic synthesis. In addition, it can react with pyridine-3-carbaldehyde to get pyridine-3-carbaldehyde-dimethylhydrazone. This reaction needs solvent ethanol by heating on a steam bath. The reaction time is 30 min. The yield is 77%.
When you are using this chemical, please be cautious about it as the following:
It is highly flammable and can cause burns and cancer. What's more, it is toxic by inhalation and if swallowed. And it is also toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) So it should avoid exposure - obtain special instructions before use and avoid release to the environment. Refer to special instructions / safety data sheets.
People can use the following data to convert to the molecule structure.
1. SMILES:N(N)(C)C
2. InChI:InChI=1/C2H8N2/c1-4(2)3/h3H2,1-2H3
3. InChIKey:RHUYHJGZWVXEHW-UHFFFAOYAL
The following are the toxicity data which has been tested.
Organism | Test Type | Route | Reported Dose (Normalized Dose) | Effect | Source |
---|---|---|---|---|---|
cat | LDLo | intraperitoneal | 30mg/kg (30mg/kg) | BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY) VASCULAR: REGIONAL OR GENERAL ARTERIOLAR OR VENOUS DILATION LUNGS, THORAX, OR RESPIRATION: CYANOSIS | European Journal of Toxicology and Environmental Hygiene. Vol. 7, Pg. 238, 1974. |
dog | LC50 | inhalation | 3580ppm/15M (3580ppm) | GASTROINTESTINAL: "HYPERMOTILITY, DIARRHEA" BEHAVIORAL: TREMOR BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD | American Industrial Hygiene Association Journal. Vol. 24, Pg. 137, 1963. |
dog | LD50 | intraperitoneal | 60mg/kg (60mg/kg) | BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD LUNGS, THORAX, OR RESPIRATION: OTHER CHANGES GASTROINTESTINAL: NAUSEA OR VOMITING | National Technical Information Service. Vol. AD292-689, |
dog | LD50 | intravenous | 60mg/kg (60mg/kg) | Medycyna Pracy. Industrial Medicine. Vol. 24, Pg. 71, 1973. | |
dog | LDLo | skin | 301mg/kg (301mg/kg) | BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD | Toxicology and Applied Pharmacology. Vol. 18, Pg. 649, 1971. |
guinea pig | LC50 | inhalation | 100mg/m3/4H (100mg/m3) | Toksikologicheskii Vestnik. Vol. (6), Pg. 39, 1999. | |
guinea pig | LD50 | skin | 1329mg/kg (1329mg/kg) | BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD | U.S. Army Chemical Warfare Laboratories. Vol. CWL, |
hamster | LC50 | inhalation | 392ppm/4H (392ppm) | BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD | AMA Archives of Industrial Health. Vol. 12, Pg. 609, 1955. |
hamster | LD50 | subcutaneous | 325mg/kg (325mg/kg) | Cancer Letters Vol. 35, Pg. 303, 1987. | |
human | TDLo | unreported | 10mg/kg (10mg/kg) | BEHAVIORAL: HEADACHE LUNGS, THORAX, OR RESPIRATION: OTHER CHANGES LIVER: LIVER FUNCTION TESTS IMPAIRED | "Spravochnik po Toksikologii i Gigienicheskim Normativam Vol. -, Pg. 71, 1999. |
monkey | LD50 | intraperitoneal | 60mg/kg (60mg/kg) | BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD GASTROINTESTINAL: NAUSEA OR VOMITING | National Technical Information Service. Vol. AD292-689, |
mouse | LC50 | inhalation | 172ppm/4H (172ppm) | SENSE ORGANS AND SPECIAL SENSES: OTHER: EYE BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD LUNGS, THORAX, OR RESPIRATION: DYSPNEA | AMA Archives of Industrial Health. Vol. 12, Pg. 609, 1955. |
mouse | LD50 | intraperitoneal | 113mg/kg (113mg/kg) | SENSE ORGANS AND SPECIAL SENSES: MIOSIS (PUPILLARY CONSTRICTION): EYE SKIN AND APPENDAGES (SKIN): HAIR: OTHER BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD | Proceedings of the Society for Experimental Biology and Medicine. Vol. 124, Pg. 172, 1967. |
mouse | LD50 | intravenous | 250mg/kg (250mg/kg) | Medycyna Pracy. Industrial Medicine. Vol. 24, Pg. 71, 1973. | |
mouse | LD50 | oral | 155mg/kg (155mg/kg) | BRAIN AND COVERINGS: RECORDINGS FROM SPECIFIC AREAS OF CNS KIDNEY, URETER, AND BLADDER: "CHANGES IN TUBULES (INCLUDING ACUTE RENAL FAILURE, ACUTE TUBULAR NECROSIS)" BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD | "Spravochnik po Toksikologii i Gigienicheskim Normativam Vol. -, Pg. 71, 1999. |
rabbit | LD50 | skin | 1060mg/kg (1060mg/kg) | "Documentation of the Threshold Limit Values and Biological Exposure Indices," 5th ed., Cincinnati, OH, American Conference of Governmental Industrial Hygienists, Inc., 1986Vol. 5, Pg. 210.1(89), 1986. | |
rat | LC50 | inhalation | 252ppm/4H (252ppm) | SENSE ORGANS AND SPECIAL SENSES: OTHER: EYE LUNGS, THORAX, OR RESPIRATION: DYSPNEA BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD | AMA Archives of Industrial Health. Vol. 12, Pg. 609, 1955. |
rat | LD50 | intraperitoneal | 102mg/kg (102mg/kg) | BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD | Toxicology and Applied Pharmacology. Vol. 6, Pg. 371, 1964. |
rat | LD50 | intravenous | 119mg/kg (119mg/kg) | Medycyna Pracy. Industrial Medicine. Vol. 24, Pg. 71, 1973. | |
rat | LD50 | oral | 122mg/kg (122mg/kg) | Medycyna Pracy. Industrial Medicine. Vol. 24, Pg. 71, 1973. | |
rat | LD50 | skin | 770mg/kg (770mg/kg) | BRAIN AND COVERINGS: RECORDINGS FROM SPECIFIC AREAS OF CNS BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD BLOOD: CHANGES IN BONE MARROW NOT INCLUDED ABOVE | "Spravochnik po Toksikologii i Gigienicheskim Normativam Vol. -, Pg. 71, 1999. |
rat | LDLo | intracrebral | 27mg/kg (27mg/kg) | BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD | Biochemical Pharmacology. Vol. 14, Pg. 1901, 1965. |