What is a Dimethylpyridine

Dimethylpyridine, aswell alleged azabenzene and azine, is a heterocyclic ambrosial tertiary amine characterized by a six-membered ring anatomy composed of 5 carbon atoms and a nitrogen which alter one carbon-hydrogen assemblage in the benzene ring (C5H5N). The simplest affiliate of the Dimethylpyridine ancestors is Dimethylpyridine itself. It is colorless, flammable, baneful aqueous with a abhorrent odor, miscible with baptize and with a lot of amoebic solvents, boils at 115 C. Its aqueous band-aid is hardly alkaline. Its conjugate acerbic is alleged pyridinium cation, C5H5NH+, acclimated as a blaze abettor for amoebic synthesis.. Dimethylpyridine is a abject with actinic backdrop agnate to tertiary amines. Nitrogen in the ring arrangement has an close abandoned brace of electrons, that does not participate in the ambrosial pi-bond. Its aqueous band-aid is hardly alkaline. It is adverse and acknowledging with able oxidizers and able acids, and reacts berserk with chlorosulfonic acid, maleic anhydride, oleum, perchromates, b-propiolactone, formamide, chromium trioxide, and sulfuric acid. Aqueous Dimethylpyridine calmly evaporates into the air. If it is appear to the air, it may yield several months to years until it break down into added compounds. Usually, Dimethylpyridine is acquired from atramentous tar or actinic from added chemicals, mainly acetaldehyde and ammonia. Dimethylpyridine compounds are begin in nature.

more about:
2,5-Dimethylpyridine prices
from:
Acridine Raw Material

2,5-Dithiobiurea description of each parameter

Preparation:
Method one: The preparation method is the reaction vessel with stirring hydrazine sulfate into wet basis, a small amount of catalyst is added, and then into ammonium thiocyanate, open jacket steam heating under reflux 3.5h, cooled, discharge, filtered, washed with water , vacuum filter to dryness to give the finished product.
Method Two: Hydrazine sulfate and thiocyanate amines by condensation, heavy discharge, too.
Storage features: Treasury ventilated low-temperature drying; oxidants, acids stored separately
Toxicity rating: high toxicity
Acute toxicity: Oral - Rat LD50: 500 mg / kg; celiac - Mouse LD50: 100 mg / kg
Health Hazard: heat decomposition of toxic emissions of nitrogen oxides and sulfur oxides
Category: Pesticides
Extinguishing Media: Water, dry chemical, dry sand, carbon dioxide, foam, extinguishing agent 1211
Use one: Is  2,5-Dithiobiurea  leaf blight fungicide intermediates.
Uses two: pesticide and pharmaceutical intermediates.
Appearance: Bisthiourea pure product as a white crystalline solid, mp206 ~ 208 ℃, in hot water with some solubility, soluble in pyridine, triethylamine, dimethylformamide and general solvent.



More about:2,5-Dithiobiurea suppliers
From:chemical reagent

Specifications of 2,3-Difluoro-4-nitroanisole

2,3-Difluoro-4-nitroanisole
Molecular Formula:C7H5F2NO3
CAS No.:66684-59-1
Molecular Formula: C7H5F2NO3
Molecular Weight:189.12   
Melting point (oC): 96-99
o-Nitroanisole is reasonably anticipated to be a human carcinogen based on evidence of malignant tumor formation at multiple tissue sites in multiple species of experimental animals (For detasils See NTP, 1993).
When administered in the diet to male and female rats, o-nitroanisole induced increased incidences of mononuclear cell leukemia and neoplasms of the urinary bladder, kidney, and large intestine. When administered in the diet to male and female mice, o-nitroanisole induced increased incidences of benign and malignant hepatocellular neoplasms in males and increased incidences of hepatocellular adenomas in females.
PROPERTIES
O-nitroanisole is a colorless to slightly yellow liquid with a boiling point of 277°C and a melting point of 9-10°C. It is insoluble in water but is soluble in most organic solvents, including alcohol and ether. As a bulk chemical, o-nitroanisole is stable for two weeks at temperatures up to 60°C when stored protected from light. When heated to decomposition, o-nitroanisole emits toxic fumes of NOx.
USE
o-Nitroanisole is used primarily as a precursor to o-anisidine which is prepared by direct nitro-reduction. o-Anisidine is used extensively in the synthesis of azo dyes either directly after being converted to a diazonium salt or as a precursor for the preparation of dianisidine which is diazotized and coupled. Directly or indirectly, o-anisidine is used in the manufacture of over 100 azo dyes (For detasils See NTP, 1993). o-Nitroanisole has also been used as an intermediate for pharmaceuticals (IARC V.65, 1996).
More about: 2,3-Difluoro-4-nitroanisole sale
Read more: Best Chemicals