GB
CAS No. 33550, 91-17-8
Molecular Formula C₁₀H₁₈
molecular weight 138 .25

colorless liquid, aromatic odor; vapor pressure 0.13kPa/22.5 ° C a flash point of 54 ° C; the temperature 43.3 ° C / cis; boiling point of 194.6 ° C / cis; solubility : do not dissolve in water, soluble in alcohol, ether, etc. Most organic solvents; density : relative density (water = 1) 0.89 (cis); the relative density (Air = 1) 4.76; Stability : stability; risk Marker 7 (flammable liquids); the main purposes : for oil, resin and rubber in addition to the solvent and paint, lubricants

2. The impact on the environment :
a health hazard

pathways : inhaled, ingested, percutaneous absorption.
health hazards : This is the skin and mucous irritation, anesthetic effects. After the introduction of inhaled respiratory tract irritation, headaches, dizziness. Liquid or a high concentration of a vapor ocular irritation.
chronic effects : Long-term exposure can cause peripheral neuropathy. Influential right gastrointestinal tract. Contact with the skin can cause small blisters, eczema, skin skim. That may affect the kidneys.

two, toxicology information and environmental behavior

toxicity : is low toxicity category.
acute toxicity : LD₅₀4170mg/kg (rat oral); 5900mg/kg (percutaneous rabbit); Inhalation 100ppm, the lowest dose poisoning, a stimulating effect.
subacute and chronic toxicity : inhalation fed guinea pigs × 8 hours / day × 1, 1 / 3 deaths; Guinea pigs fed inhalation × 8 hours / day x 21, 2 / 3 deaths; Guinea pigs inhaled 8g / m3 x 8 hours / day x 23, 3 / 3 deaths; , chronic exposure, a local blisters eczema, worse, rhagadia, urine protein positive and kidney damage.

hazardous characteristics : flammable and met the fire, high-heat combustion caused the explosion. With a strong oxidant can respond. In contact with air or light conditions can be generated with a potential explosion risk of peroxides.
combustion (decomposition) products : carbon monoxide, carbon dioxide.

3. Emergency Monitoring Methods :

4. Laboratory monitoring methods : gas chromatography
(WS/T172-1999, air operations)
GC "harmful air Determination of Method" (second edition), Hang Shi-ping editor

5. Environmental standards :
former Soviet air workshop harmful substances maximum allowable concentration 100mg/m3
olfactory threshold concentration 0.1mg/L

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 respirators-positive pressure self-sufficiency, wearing fire protective clothing. 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. We could also use non-flammable dispersant made of latex, wash, lotion diluted Add to the wastewater system. Large leak : to build a causeway or trenching asylum; Foam coverage, lower vapor disasters. Ex pump transferred to tankers or exclusive collector, recycling or shipped to the disposal of waste disposal sites.

two protective measures

respiratory protection : high concentration environment, self-priming should wear a gas mask filter type (half-mask).
eye protection : Wear protective safety glasses.
physical protection : antistatic wear uniforms.
hand protection : Wear gloves Oil-benzene.
other : no smoking scene work. Work to complete, take a shower. Pay attention to personal hygiene.

three, and emergency measures

contact with the skin : stripped of contaminated clothing, use soap and water thoroughly washed skin. Medical treatment.
eye contact : Did eyelid, mobile or saline irrigation water. Medical treatment.
Inhalation : rapidly from the scene to fresh air. To keep the airway patency. If breathing is difficult, give oxygen. If breathing stop immediately mouth. Medical treatment. Fresh into
: warm water to drink enough, the symptoms. Medical treatment.

fire fighting methods : water cooling containers, if possible to move containers from the scene empty Department. Extinguishant : mist of water, foam, dry powder, carbon dioxide, sand.