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GB No. 61073
CAS No. 108-39-4
Molecular Formula C7H8O; HOC6H4CH3
molecular 108.13

transparent colorless liquid, aromatic odor; vapor pressure of 0. 13kPa/52 ° C the flash point of 86 ° C; the temperature of 10.9 ° C; boiling point of 202.8 ° C; solubility : Micro dissolve in water, immiscible in ethanol, ethyl ether, sodium hydroxide solution; density : relative density (water = 1) 1.03; the relative density (Air = 1) 3.72; Stability : stability; risk Marker 14 (drugs); the main purposes : for analyzing and reagents for organic synthesis

2. The impact on the environment :
a health hazard

pathways : inhaled, ingested, percutaneous absorption.
health hazards : the goods on the skin, mucous membrane and stimulate a strong corrosive effect. Caused damage to multiple organs.
acute poisoning : caused muscle weakness, gastrointestinal symptoms, CNS inhibition, prostration, and the temperature dropped coma, and can lead to pulmonary edema and liver, kidney, pancreas and other organs and ultimately respiratory failure.
chronic effects : may cause gastrointestinal dysfunction, liver and kidney damage and skin rashes.

cresol human right organizations corrosive strong, if not completely removed, can cause burns. Skin contact may immediately without any feeling. But after a few minutes, a strong tingling and burning, followed by loss of feeling. The affected skin wrinkles, gray and softened, and then jaundice may occur bad. Such chemicals like eye contact, can cause corneal injury, and visual effects. Skin repeated or prolonged exposure to low concentrations, can cause skin rashes, and may cause skin discolouration. If inhaled through the respiratory tract, absorbed through the skin or swallowing may cause systemic poisoning, in 20 or 30 minutes, it is possible that the signs and symptoms of patients weakness, headache, King halo, vision loss, tinnitus, and accelerate the mentally disordered breathing or loss of consciousness, serious cause death . Low concentrations of p-cresol these channels can cause chronic poisoning, toxic symptoms and signs include nausea, vomiting, dysphagia, salivation, diarrhea, loss of appetite, headache, fainting, dizziness, mental disorders and skin rashes. If serious liver and kidney damage, and may cause death.

two, toxicology information and environmental behavior

toxicity : is low toxicity category.
acute toxicity : LD50242mg/kg (rat oral); 2050mg/kg (rabbit percutaneous)
carcinogenicity : mouse skin by poisoning the lowest dose (TDL0) : 4800mg / kg (12 weeks, intermittent), the induced positive tumors.

pollution sources : m can be used as a disinfectant, mineral floating collection agent, organic synthesis, dyes, plastics and the antioxidant intermediates. For synthetic resin, explosives, preservatives, fumigants. Also for the textile, pharmaceutical, ink manufacturing and production of the film, an important raw material. M is also highly effective and low toxicity pesticides such as speed Granville to eliminate the raw materials, manufacturing spices, resin raw materials. Over the production or use of the m-cresol industry in the production and storage and transportation process, in the event of accidents may have caused pollution to the environment, ecology and human hazards.

right biodegradable impact : water concentration 11.4mg / L, not acclimated activated sludge nitrification of ammonia nitrogen role was inhibited 75%, the concentration 40 mg / L, fluorescent Pseudomonas the degradation of glucose by inhibition, concentration 600 mg / L , E. coli to the degradation of glucose by inhibition.

hazardous characteristics : case of fire, heat or contact with oxidants, combustion caused a risk of explosion.
combustion (decomposition) products : carbon monoxide, carbon dioxide.

3. Emergency Monitoring Methods :
rapid detection tube method; The portable gas chromatography "sudden environmental pollution monitoring and emergency treatment and disposal technologies," 10,000 < too editor / P>

4. Laboratory monitoring methods :
monitoring methods source categories
GC "air and emission monitoring and analysis methods," the State Environmental Protection Administration Part
air and exhaust gas chromatography "Solid Waste dump Test Analysis and Evaluation Manual, "the China Environmental Monitoring terminus translated solid waste
HPLC" harmful air Determination of Method "(second edition), edited Hang Shi-ping air
chlorine imine 2 bromophenyl quinone colorimetry" chemical enterprises air industry Determination of harmful substances ", the Chemical Industry Press chemical air

5. Environmental standards :
China (TJ36-79) Workshop harmful substances in the air that the maximum allowable concentration 5mg/m3 [Paper]
the former Soviet Union (1978) ambient air concentrations of 0 basic security. 02mg/m3
China (GB8978-1996) sewage discharge standard one : 0.1mg/L
2 : 0.2mg/L
3 : 0.5 mg / L
the former Soviet Union (1975) Harmful Substances in Water maximum allowable concentration 0.004mg/L
olfactory threshold concentration of 0.27ppm

6. Emergency treatment and disposal methods :
a leakage contingency

rapid withdrawal from air leakage personnel to a safe area, and isolation and strict restrictions on access. Cut off the fire source. Recommended emergency personnel wearing self-Pressurized respirators to wear protective clothing. Do not direct contact with leakage. As far as possible, cut off the source of leakage. Preventing access to sewers, flood discharge trench so restrictive space. A small leak : sand, dry lime or soda ash mixed. Large leak : to build a causeway or trenching asylum; Foam coverage, lower vapor disasters. With the transfer pump to tankers or exclusive collector, recycling or shipped to the disposal of waste disposal sites.
m for liquid at room temperature.
1 water pollution are the main : the upper reaches of coastal water pollution incidents emissions; Land incidents (including transport process car accident) happened after the soil into water, but also directly tank fell into the roadside water situation. The following methods can be addressed :
?identify coastal water pollution from wastewater discharges, continue to prevent its body of water.
?If it is liquid-m-cresol the tanker accident occurs, it should seek to block cracks, or quickly built a dike to stop flow; If it is in the plains, areas around leaking dike built isolation; If the leak occurred on the slopes, pollutants can flow along the line, the slope the bottom dike built to stop solution. In certain circumstances, the flow of liquid beneath quickly dug a hole can be reached resistance leakage of pollutants containing the same result.
?stopped on the embankment or on pit stop to collect the liquid to be moved to safety as soon as possible sealed containers operation to take the necessary safety measures of protection.
Water has entered the area of liquid or solid-m-cresol more difficult to deal with, usually adopt appropriate measures will be water pollution and other water bodies isolation means, such as the smaller dams on the rivers to stop, will be contaminated irrigation water to the other body of water or sewage treatment plant.
2 soil pollution is the main variety of high concentrations of wastewater (including liquid-m-cresol) direct contamination of the soil, as solid-m-cresol Qingxi accident in the soil.
?solid-m-cresol conta
Notice:Each item can have many explanations from different angels. If you want grasp the item comprehensively,please see below "more details data".

Please see below "More Detailed Data"
More Detailed Data:
1) 3-Cresol;3-Methylphenol;m-Hydroxytoluene;m-Cresylic acid;m-Oxytoluene;m-Cresol;Phenol, 3-methyl-;m-Methylphenol
2) 33-methylphenol;m-Cresol
3) 33-methylphenol;m-Cresol
4) m-cresol;m-hydroxytoluene;3-methyl phenol
5) 3-Methylphenol;3-Hydroxytoluene;Hydroxy-3-methylbenzene;m-Cresol
6) m-cresol
7) cresol
8) m-cresol
9) 3-Cresol
10) methyl-Phenol;Cresols;Cresylol;acede cresylique;acide cresylique;ar-toluenol;bacillol;cresol;cresoli
Notice Some description was translated by software and the data is only as a reference.
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