Properties of Common Hazardous Substances

Properties of Common Hazardous Substances
Methanol (Class III Hazardous Chemicals)
It is a colorless, volatile liquid with an alcoholic odor. It has irritating odor.
Melting point (℃): -97.8.
Boiling point (℃): 64.7.
Density (water=1): 0.79.
Soluble in water, miscible with alcohols, ether and other organic solvents.
Crude methanol (three types of hazardous chemicals) products in addition to methanol also contains water and dozens of trace organic impurities. Such as: aldehydes, ketones, ethers, acids, esters, alkanes, amines and carbonyl iron. These methanol containing water and organic impurities is called crude methanol, which is also colorless and transparent liquid.

Waste methanol (three types of hazardous chemicals) refers to the crude methanol, there are impurities, acidic or alkaline, or contaminated methanol, mostly colorless and sometimes orange-yellow.
Benzyl Alcohol (Class III Hazardous Chemicals)
Colorless liquid with aromatic odor. Melting point (℃): -15.3, boiling point (℃): 205.7, density (water = 1): 1.0419. soluble in water, soluble in alcohols, ethers, aromatic hydrocarbons
Ethanol (Class III Hazardous Chemicals)
(commonly known as alcohol) is a flammable, volatile, colorless and transparent liquid at room temperature and pressure, and its aqueous solution has a wine-like odor and is slightly irritating. It has a wine-like odor and stimulating pungent taste, slightly sweet.
Ethanol liquid density is 0.789g/cm3(20C°), boiling point is 78.4°C, melting point is -114.3°C, flammable, and its vapor can form explosive mixtures with air.
Mutually soluble with water in any ratio. Miscible with water, chloroform, ether, methanol, acetone and most other organic solvents.

Chloroethanol (Class III Hazardous Chemicals)
(Dichloroethanol) colorless transparent liquid, Melting point (ºC): -67, Boiling point (ºC): 128.8, Density: 1.2007, Mutually soluble with water, acetone, ether, slightly soluble in carbon tetrachloride and hydrocarbons.
Phenylethanol (Class III Hazardous Chemicals)
Colorless liquid with floral odor, melting point (℃): -27, boiling point (℃): 219.5, density (water = 1): 1.02 (15 ℃), soluble in water, miscible in alcohol, ether, soluble in glycerol.
Propylene Glycol (Class III Hazardous Chemicals)
Colorless viscous stable absorbent liquid, almost tasteless and odorless, flammable, low toxicity.
Boiling point (ºC,101.3kPa): 187.3, melting point (ºC,flow point): -60, density (g/mL,20/20ºC): 1.0381.
Miscible with water, ethanol, ether, chloroform, acetone and other organic solvents. Small solubility for hydrocarbons, chlorinated hydrocarbons, oils and fats.
It can be stored and transported in iron, soft steel, copper, tin, stainless steel containers or resin-coated containers.
Polypropylene Glycol (Class III Hazardous Chemicals)
Colorless to light yellow viscous liquid.
Slightly soluble in water, soluble in oil, many hydrocarbons and aliphatic alcohols, ketones, esters, etc.
Melting point: -13.2°C Boiling point: 197.5°C Density (water=1) 1.11
Non-volatile. Non-corrosive.
Methyl butanol (three types of hazardous chemicals)
Colorless liquid with unpleasant odor.
Melting point (℃): -117.2, density (water = 1): 0.81
Slightly soluble in water, miscible in alcohol, ether.
n-Propanol (Class III Hazardous Chemicals)
Colorless transparent liquid with ethanol-like odor
Melting point (℃): -127, boiling point (℃): 97.1, density (water = 1): 0.80
Soluble in water, ethanol, ether.

n-Propanol (Dimethyl Methanol) (Class III Hazardous Chemicals)
It is a colorless liquid.
Melting point -126 .5 ℃, boiling point 97 .4 ℃, relative density 0 .8035 (20/4 ℃);
Soluble in water, ethanol and ether; can form an azeotropic mixture with water, boiling point 87 ℃, water content of 28.3%.
Isopropanol is a colorless liquid.
Melting point -89 .5 ℃, boiling point 82 .4 ℃. Relative density (d204) 0.7855.
Soluble in water, ethanol, ether, acetone, etc., and water to form an azeotropic mixture, boiling point 80.37 ℃, 13% water content.
Propanetriol (glycerol) (three types of hazardous chemicals)
Colorless clear viscous liquid. No odor. Warm sweet odor. Can absorb moisture from the air, also can absorb hydrogen sulfide, hydrogen cyanide and sulfur dioxide
Can cause combustion and explosion when exposed to strong oxidizing agents such as chromium trioxide, potassium chlorate and potassium permanganate.
Relative density 1.26362, melting point 17.8℃. Boiling point 290.0℃.
Miscible with water and ethanol, insoluble in benzene, chloroform, carbon tetrachloride, carbon disulfide, petroleum ether and oil.
Butylene Glycol (1,2-butanediol, 1,3-butanediol, 1,4-butanediol) (Class III Hazardous Chemicals)
Colorless, viscous liquid with toluene-like odor.

Density 1.0697, melting point:7.5℃, boiling point:162℃.
Insoluble in water. Soluble in ethanol, benzene, chloroform, ether, acetone, etc. (chlorotoluene slightly soluble in water: 0.3 g/L (20 ºC))
Benzyl Alcohol (Class III Hazardous Chemicals)
Colorless transparent viscous liquid with weak aromatic odor
Melting point (℃): -15.3, boiling point (℃): 205.7, density (water = 1): 1.04 (25 ºC).
Flammable. Slightly soluble in water (4 g/100 mL), miscible with ethanol, ether, benzene, chloroform and other organic solvents. Generally non-corrosive to metals
Mixed benzene (Class III hazardous chemicals)
A mixture of benzene, toluene, xylene and other aromatic hydrocarbons.
Mixed benzene is colorless and transparent (or light yellow) liquid with aromatic odor at room temperature, volatile.
Its boiling point and melting point with its mixture of different components and have a greater difference in density 0.85-0.87 smaller than water
Mixed benzene is insoluble in water. The ability to dissolve organic molecules and some non-polar inorganic molecules is very strong.
Aniline (Class VI Hazardous Chemicals)
Colorless oily liquid, in the air will gradually change to dark brown, long time to brown-black. Has an unpleasant odor (toxic). Slightly soluble in water, soluble in ethanol, ether, benzene. Melting point: -6.2℃, boiling point: 184.4℃. Density: 1.0217.