2-bromo-2-nitro-1,3-propanediol
Conditions | Yield |
---|---|
With bromine In diethyl ether at 0℃; for 0.5h; | 88.6% |
formaldehyd
nitromethane
bromopicrin
2-bromo-2-nitro-1,3-propanediol
Conditions | Yield |
---|---|
With sodium hydroxide In water at 44 - 55℃; pH=5.3 - 7.2; Product distribution / selectivity; | 76.8% |
Conditions | Yield |
---|---|
With alkali hypobromite und nachfolgender Zusatz von Brom; |
2-hydroxymethyl-2-nitro-propane-1,3-diol
A
2-bromo-2-nitro-1,3-propanediol
B
bromopicrin
Conditions | Yield |
---|---|
With sodium hydroxide |
2-bromo-2-nitro-1,3-propanediol
Conditions | Yield |
---|---|
With chloroform; bromine |
2-bromo-2-nitro-1,3-propanediol
Conditions | Yield |
---|---|
With bromine |
2-bromo-2-nitro-1,3-propanediol
Conditions | Yield |
---|---|
With water; oxygen |
2-bromo-2-nitro-1,3-propanediol
A
dibenzyl disulphide
B
2,3-bis(hydroxymethyl)-2-,3-dinitro-1,4-butanediol
Conditions | Yield |
---|---|
With sodium; phenylmethanethiol In methanol for 1h; | A 99% B 48% |
2-bromo-2-nitro-1,3-propanediol
acetaldehyde
5-bromo-2-methyl-5-nitro-1,3-dioxane
Conditions | Yield |
---|---|
With toluene-4-sulfonic acid In water; benzene | 85% |
2-bromo-2-nitro-1,3-propanediol
2,2-dimethoxy-propane
2,2-dimethyl-5-bromo-5-nitro-1,3-dioxane
Conditions | Yield |
---|---|
With [(1S)-7,7-dimethyl-2-oxobicyclo[2.2.1]hept-1-yl]methanesulfonic acid at 20℃; for 48h; | 82% |
With camphor-10-sulfonic acid at 20℃; for 72h; Inert atmosphere; | 75.3% |
formaldehyd
2-bromo-2-nitro-1,3-propanediol
tert-butylamine
1,3-di(tert-butyl)-5-bromo-5-nitro-1,3-diazacyclohexane
Conditions | Yield |
---|---|
In methanol; water at 20℃; for 48h; Condensation; cyclization; | 81% |
2-bromo-2-nitro-1,3-propanediol
acetone
2,2-dimethyl-5-bromo-5-nitro-1,3-dioxane
Conditions | Yield |
---|---|
With toluene-4-sulfonic acid In toluene at 120℃; for 24h; | 73% |
With chloroform; sulfuric acid |
Conditions | Yield |
---|---|
With sulfuric acid; hydrogen bromide In water at 95℃; for 1h; | 69% |
2-bromo-2-nitro-1,3-propanediol
5-bromo-2-(5-O-nitro-1,4:3,6-dianhydro-D-glucit-2-yloxy)-5-nitro-2-oxo-1,3,2λ5-dioxaphosphorinane
Conditions | Yield |
---|---|
With pyridine In acetonitrile at 15 - 30℃; for 23.5h; | 68% |
2-bromo-2-nitro-1,3-propanediol
diisobutyl ester of isobutylboronic acid
Conditions | Yield |
---|---|
In benzene | 68% |
Conditions | Yield |
---|---|
In toluene Michaelis-Arbuzov Synthesis; Reflux; | 67% |
2-bromo-2-nitro-1,3-propanediol
4-bromophenyl carbamidophosphoric acid dichloride
Conditions | Yield |
---|---|
With triethylamine In tetrahydrofuran; toluene at 0 - 20℃; for 7h; | 62% |
2-bromo-2-nitro-1,3-propanediol
N-4-methylphenylureidophosphoryl dichloride
Conditions | Yield |
---|---|
With triethylamine In tetrahydrofuran; toluene at 0 - 20℃; | 61% |
Conditions | Yield |
---|---|
In 1,4-dioxane at 50℃; for 3h; Product distribution; reactions of derivatives; | 60% |
In 1,4-dioxane at 50℃; for 3h; | 60% |
1-dichlorophosphoryloxy-4-nitro-benzene
2-bromo-2-nitro-1,3-propanediol
5-bromo-5-nitro-2-p-nitrophenoxy-2oxo-1,3,2-dioxaphosphorinane
Conditions | Yield |
---|---|
In 1,4-dioxane at 50℃; for 3h; | 60% |
2-bromo-2-nitro-1,3-propanediol
4-chlorophenyl-carbamidophosphoric acid dichloride
Conditions | Yield |
---|---|
With triethylamine In tetrahydrofuran; toluene at 0 - 20℃; | 60% |
2-bromo-2-nitro-1,3-propanediol
2,4-dimethylphenyl carbamidophosphoric acid dichloride
Conditions | Yield |
---|---|
With triethylamine In tetrahydrofuran; toluene at 0 - 20℃; | 58% |
2-bromo-2-nitro-1,3-propanediol
O-phenyl phosphorodichloridate
5-bromo-5-nitro-2-phenoxy-2-oxo-1,3,2-dioxaphosphorinane
Conditions | Yield |
---|---|
In 1,4-dioxane at 50℃; for 3h; | 56% |
2-bromo-2-nitro-1,3-propanediol
C8H8Cl3N2O2P
Conditions | Yield |
---|---|
With triethylamine In tetrahydrofuran; toluene at 0 - 20℃; | 56% |
Conditions | Yield |
---|---|
With triethylamine In tetrahydrofuran; toluene at 0 - 20℃; | 53% |
Conditions | Yield |
---|---|
With triethylamine In tetrahydrofuran; toluene at 0 - 20℃; | 52% |
2-bromo-2-nitro-1,3-propanediol
4-methylphenyl phosphorodichloridate
5-Bromo-5-nitro-2-p-tolyloxy-[1,3,2]dioxaphosphinane 2-oxide
Conditions | Yield |
---|---|
In 1,4-dioxane at 50℃; for 3h; | 49% |
2-bromo-2-nitro-1,3-propanediol
C7H13Cl2N2O2P
Conditions | Yield |
---|---|
With triethylamine In tetrahydrofuran; toluene at 0 - 20℃; | 48% |
2-bromo-2-nitro-1,3-propanediol
m-Tolyl dichlorophosphate
5-Bromo-5-nitro-2-m-tolyloxy-[1,3,2]dioxaphosphinane 2-oxide
Conditions | Yield |
---|---|
In 1,4-dioxane at 50℃; for 3h; | 42% |
N,N-di(2-chloroethyl)amidophosphoric acid dichloride
2-bromo-2-nitro-1,3-propanediol
Conditions | Yield |
---|---|
With triethylamine In diethyl ether at 20℃; for 4h; | 42% |
5,6-dihydro-2H-pyran-3-carbaldehyde
2-bromo-2-nitro-1,3-propanediol
5-Brom-5-nitro-2-(5',6'-dihydro-2'H-pyranyl)-1,3-dioxan
Conditions | Yield |
---|---|
With toluene-4-sulfonic acid In benzene Heating; | 40.3% |
2-bromo-2-nitro-1,3-propanediol
2,2-dimethyl-5-bromo-5-nitro-1,3-dioxane
Conditions | Yield |
---|---|
With trifluoroborane diethyl ether; sodium hydrogencarbonate In hexane; acetone | 40% |
2-bromo-2-nitro-1,3-propanediol
2,2,2-trichloro-1,3-dimethyl-1,3,2-diazaphosphetidin-4-one
Conditions | Yield |
---|---|
In dichloromethane for 4h; | 38% |
Molecular Structure of Bronopol (CAS NO.52-51-7):
IUPAC Name: 2-bromo-2-nitropropane-1,3-diol
Empirical Formula: C3H6BrNO4
Molecular Weight: 199.988
Index of Refraction: 1.574
Surface Tension: 74.1 dyne/cm
Density: 2.018 g/cm3
Flash Point: 170.3 °C
Enthalpy of Vaporization: 69.86 kJ/mol
Boiling Point: 358 °C at 760 mmHg
Vapour Pressure: 1.45E-06 mmHg at 25°C
Synonyms:1,3-Propanediol, 2-bromo-2-nitro- ; 2-Bromo-1-nitro-1,3-propanediol ; 2-bromo-2-nitro-3-propanediol ; 2-Bromo-2-nitropropan-1,3-diol ; 2-Nitro-2-bromo-1,3-propanediol ; 3-Propanediol,2-bromo-2-nitro-1 ; beta-Bromo-beta-nitrotrimethyleneglycol
Organism | Test Type | Route | Reported Dose (Normalized Dose) | Effect | Source |
---|---|---|---|---|---|
dog | LD50 | oral | 250mg/kg (250mg/kg) | "Pesticide Index," Frear, E.H., ed., State College, PA, College Science Pub., 1969Vol. 5, Pg. 30, 1976. | |
mouse | LD50 | intraperitoneal | 15500ug/kg (15.5mg/kg) | Khimiko-Farmatsevticheskii Zhurnal. Chemical Pharmaceutical Journal. For English translation, see PCJOAU. Vol. 11(1), Pg. 73, 1977. | |
mouse | LD50 | intravenous | 48mg/kg (48mg/kg) | Iyakuhin Kenkyu. Study of Medical Supplies. Vol. 8, Pg. 680, 1977. | |
mouse | LD50 | oral | 270mg/kg (270mg/kg) | Pesticide Manual. Vol. 9, Pg. 103, 1991. | |
mouse | LD50 | skin | 4750mg/kg (4750mg/kg) | Iyakuhin Kenkyu. Study of Medical Supplies. Vol. 8, Pg. 680, 1977. | |
mouse | LD50 | subcutaneous | 116mg/kg (116mg/kg) | Iyakuhin Kenkyu. Study of Medical Supplies. Vol. 8, Pg. 680, 1977. | |
rat | LC50 | inhalation | > 5gm/m3/6H (5000mg/m3) | Pesticide Manual. Vol. 9, Pg. 103, 1991. | |
rat | LD50 | intraperitoneal | 26mg/kg (26mg/kg) | Journal of the Society of Cosmetic Chemists. Vol. 29, Pg. 3, 1978. | |
rat | LD50 | intravenous | 37400ug/kg (37.4mg/kg) | Iyakuhin Kenkyu. Study of Medical Supplies. Vol. 8, Pg. 680, 1977. | |
rat | LD50 | oral | 180mg/kg (180mg/kg) | "Pesticide Index," Frear, E.H., ed., State College, PA, College Science Pub., 1969Vol. 5, Pg. 30, 1976. | |
rat | LD50 | skin | 1600mg/kg (1600mg/kg) | "Agrochemicals Handbook," with updates, Hartley, D., and H. Kidd, eds., Nottingham, Royal Soc of Chemistry, 1983-86Vol. A542, Pg. 1984, | |
rat | LD50 | subcutaneous | 170mg/kg (170mg/kg) | BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY) SKIN AND APPENDAGES (SKIN): HAIR: OTHER | Kiso to Rinsho. Clinical Report. Vol. 8, Pg. 1029, 1974. |
Hazard Codes Xn,N
Risk Statements 21/22-37/38-41-50
R21/22:Harmful in contact with skin and if swallowed.
R37/38:Irritating to respiratory system and skin.
R41:Risk of serious damage to the eyes.
R50:Very toxic to aquatic organisms.
Safety Statements 26-37/39-61
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
S37/39:Wear suitable gloves and eye/face protection.
S61:Avoid release to the environment. Refer to special instructions / safety data sheets.
Bronopol (CAS NO.52-51-7) is a white crystals,would burn easily,it may detonate under strong shock.While heated to decomposion evolving toxic gases. Toxic substances through skin absorption, inhalation or ingestion.
Bronopol (CAS NO.52-51-7) is a killing bacterial agents,it can effectively control a variety of plant pathogenic bacteria.It is mainly used for cosmetics,leather preservation,widely used in water treatment, pharmaceutical, pesticides, cosmetics, detergent and other industries as preservatives and sterilizing agents, by the nitro-methane and formaldehyde , bromine reaction derived.Invested in the reactor measured nitro-methane, formaldehyde, water and ethanol, 40% liquid caustic soda was added dropwise under cooling at this time there is solid precipitation, and then dropping quantitative bromine, plus completion of mixing, vacuum steam out of part of the water and ethanol, after cooling, crystallization, filtration, drying advanced Bronopol, the yield of above 70%, content is about 93%.
Bronopol (CAS NO.52-51-7) is a highly-toxic pesticide,burning will produce bromide and nitrogen oxides emitted toxic fumes.Besides should be stored and transported in low-temperature,drying environment. separately with oxidizing agents.Fire extinguishing agents water, carbon dioxide, dry powder, foam would be used if emergency.
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