ERIC Identifier: ED389141 Publication Date: 1995-10-00 Author: Tomlinson, Carol Ann Source: ERIC Clearinghouse on Disabilities and Gifted Education Reston VA. Differentiating Instruction for Advanced Learners in the Mixed-Ability Middle School Classroom. ERIC Digest E536. A particular challenge for middle school teachers is being able to differentiate or adapt instructi
Conversely, injection forms, though being painful and needing help of medical personnel for application, help to quickly achieve necessary concentration of preparation in blood amoxil online Antibiotic is usually chosen in an empiric way (at random). But when choosing one is obligatory guided by definite rules.
<4d6963726f736f667420576f7264202d20a4a3b9a1a94dbb45e0adbef0afd72dad5ea4e5aaa93130302e332e32302e646f63>Safety Data Sheets (SDS)
Product name: Unsaturated Polyester Resin
SUGGESTED AND RESTRAINT IN USING：
Soft polymer、Technics thing、Synthesis marble、Button、Polyester board、Endure climat、Endure chemistry、Fishing
pole、Build boats、Surfing board.
MANUFACTURERS OR SUPPLIER NAME：EN CHUAN CHEMICAL INDUSTRIES CO.,LTD.
Address：No. 676, Taiping Road , Taiping District, Taichung City , Taiwan .
SECTION 2-HAZARDS IDENTIFICATION
Flammable Liquid Category 3 Skin Corrosion/Irritation Category 2 Serious Eye Damage/Eye Irritation Category 2 Germ Cell Mutagenicity Category 2 Carcinogenicity Category 2 Reproductive Toxicity Category 2 Specific Target Organ Toxicity Repeated Exposure Category 2 Hazardous To The Aquatic Environment (Acute) Category 3 GHS Label elements:
In question of health endanger. It’s the dangers matters of environment in water creatures. Precautionary statements
Use only in well ventilated area. Control of exposure by mechanical ventilation in an unventilated or confined space Avoid breathing vapors and contact with skin and eyes. Wear breathing apparatus/protective gloves/face protection. Store in well-ventilated place. Disposal must be in accordance with applicable federal, state, or local regulations. Safety Data Sheets (SDS)
SECTION 3-COMPOSITION/INFORMATION ON INGREDIENTS
MIX THE MATERIAL
CHINESE AND ENGLISH NAME：Unsaturated Polyester Resin
SECTION 4-FIRST AID MEASURES
Description of necessary first aid measures
1. Flush immediately with warm water for at least 20 minutes. 2. Then seek for medical attention. 1. Washing affected area thoroughly with soap and water for at least 20 minutes. 2. Call a Physician if irritation develops or persists. 3. Removing contaminated clothing, shoes, and leathery wearings, cleaning procedure is available before reused or Ingestion:
1. If victim is conscious and alert, give 2～4 cupfuls of milk/water to dilute the substance in stomach. 2. Never give anything by mouth to an unconscious person. 3. Don’t induce vomiting unless directed to do so by medical person. 4. Then seek for medical attention. Inhalation:
1. Remove from further exposure and flush thoroughly with air.
2. If respiratory irritation, seek immediate medical assistance and call a physician.
Most important symptoms/effects, acute and delayed
Headache, fatigue, drowsiness, insomnia, anorexia and weight loss, pain in limbs, nervousness, impairment of memory.
Transitory EEG anomalies, immune systems changes and liver damage, may be present after prolonged exposures above
the exposure limit.
Indication of immediate medical attention and special treatment needed, if necessary
For acute or short term repeated exposures to styrene:
1. Severe exposures should have cardiac monitoring to detect arrhythmia. 2. Catecholamines, especially epinephrine (adrenalin) should be used cautiously (if at all). 3. Aminophylline and inhaled beta-two selective bronchodilators (e.g. salbutamol) are the drugs of choice for treatment Ingestion:
1. Ipecac syrup should be given for ingestions exceeding 3 ml (styrene)/kg. 2. For patients at risk of aspiration because of obtundation, intubation should precede lavage. 3. Pneumonitis is a significant risk. Watch the patient closely in an upright (alert patient) or left lateral head-down position (obtunded patient) to reduce aspiration potential.
SECTION 5-FIRE FIGHTING MEASURES
Safety Data Sheets (SDS)
Foam、CO 、Dry chemical powder、Water spray or fog – Large fires only.
Specific hazards arising from the chemical
1. Liquid and vapor are flammable.
2. Moderate fire hazard when exposed to heat or flame.
3. Vapor forms an explosive mixture with air.
4. Moderate explosion hazard when exposed to heat or flame.
5. Vapor may travel a considerable distance to source of ignition.
6. Heating may cause expansion or decomposition leading to violent rupture of containers.
7. On combustion, may emit toxic fumes of carbon monoxide (CO).
Special protective equipment and precautions for fire-fighters
1. Must wear MSHA/NOISH approved positive self-contained breathing apparatus（SCBA）and protective clothing.
2. Withdrawing and isolation the possible dangerous sources, fire fighting at safe distance and suitable protection area.
Keep toxic vapors and decompositions away from inhalation, when standing at upper-wind area as well. 3. Stop leakage before fire extinguishing, otherwise it may explode again because of vapors above leakage. However, it’s not well extinguishment at nondangerous circumstance, preferring to burning up. 4. Water spray may not work effectively in terms of lower flash point. Better fire fighting performed by experienced people. 5. In huge fire at larger area, automatic water spray system should be recommended. If extinguishing is not available, evacuating people back as soon as possible. 6. Out off the space immediately, if vessel collapsed or pressure relief valve went pop.
SECTION 6-ACCIDENTAL RELEASE MEASURES 3
Personal precautions, protective equipment and emergency procedure
1. Personal protective equipment (specified in Section 8)
Eyes : Chemical safety goggles are recommended, and a face shield is added when needed. Skin : Wear appropriate protective gloves to avoid skin contact. Clothing : When direct contact is likely, Use rubberized clothings, apron and boots. Respiratory : When limits are exceeded, wear a respirator approved by NIOSH/MSHA for protection against organic 2. Remove all sources of ignition. No smoking, naked lights or ignition sources. Ventilate area of leak or spill. 3. Keep unnecessary and unprotected personnel from entering. Evacuate personnel from the danger area. Consult with an Environmental precautions
1. Prevent spillage from entering drains, surface, and groundwater.
2. Contain and recover liquid when possible. Use non-sparking tools and equipment.
3. Collect liquid in an appropriate container or absorb with an inert material (e.g. vermiculite, dry sand, earth), and place
4. Report the accidental spill/release to Local/State government.
Methods and materials for containment and cleaning up
1. Remove all ignition sources.
2. Clean up all spills immediately.
3. Avoid breathing vapors and contact with skin and eyes.
4. Control personal contact by using protective equipment.
5. Contain and absorb small quantities with vermiculite or other absorbent material.
6. Wipe up.
7. Collect residues in a flammable waste container.
1. Clear area of personnel and move upwind.
2. Alert emergency responders and tell them location and nature of hazard.
3. May be violently or explosively reactive.
4. Wear breathing apparatus plus protective gloves.
5. Prevent spillage from entering drains or water course.
Safety Data Sheets (SDS)
6. No smoking, naked lights or ignition sources. Increase ventilation. 7. Stop leak if safe to do so. 8. Water spray or fog may be used to disperse/absorb vapor. 9. Contain spill with sand, earth or vermiculite. 10. Use only spark-free shovels and explosion proof equipment. 11. Collect recoverable product into labeled containers for recycling. 12. Absorb remaining product with sand, earth or vermiculite. 13. Collect solid residues and seal in labeled drums for disposal. 14. Wash area and prevent runoff into drains. 15. If contamination of drains or waterways occurs, advise emergency services.
SECTION 7-HANDLING AND STORAGE
Precautions for safe handling
1. Wash thoroughly after handling.
2. Use only in well ventilated area.
3. Ground and bond containers when transferring.
4. Use spark-free tools and explosion proof equipment.
5. Empty containers retain product residue (liquid/vapor), and can be dangerous.
6. Do not pressurize, cut, weld, braze, solder, drill, or expose empty containers to heat, sparks or open flames.
Conditions for safe storage, including any incompatibilities
1. An inhibitor is added to the monomer for protection during shipment and subsequent storage. The monomer must be
checked at regular intervals to determine inhibitor and polymer content if the material is being stored for any period of time in excess of thirty days at 32℃(90℃). The shipper should be consulted for the methods of making these determinations and their significance. 2. Iron, galvanized iron, and steel are suitable metals for tanks. 3. Storage should be located away from any area subject to fire hazards. Storage tanks located in the open or underground minimize the danger of fire, vapor and health problems. 4. Vents and flame arrestors can be easily plugged with formation of polymer. These must be periodically inspected and 5. All openings in the system should terminate outdoors and be protected by flash screen. 6. Electrical installation should conform to the National Electrical Code. 7.Storage tanks should be electrically bonded and grounded to prevent dangerous accumulations of static electricity. (see 8. Natural ventilation is all that is needed for outdoor storage installation. 9. For indoor storage : Good natural ventilation may be sufficient. The generally considered maximum allowable concentration is 50 ppm by volume in air for an eight-hour working exposure. A concentration of 5640 ppm may be fatal in 4 hours. If other than natural ventilation is required, the ventilation equipment should be designed to handle the heavy styrene monomer vapor. Since styrene monomer vapor is heavier than air, a down draft mechanical exhaust is indicated in those operation in which general ventilation should be to ensure a substantial air flow away from the work area. All ventilating systems require periodic inspection.
SECTION 8-EXPOSURE CONTROLS, PERSONAL PROTECTION
OSHA STEL : 100 ppm (skin).
OSHA Ceiling : 200 ppm (skin).
ACGIH TLV-TEL : 20 ppm.
ACGIH TLV-STEL : 40 ppm.
Taiwan TWA : 50 ppm (skin).
Taiwan STEL : 75 ppm (skin).
Taiwan Ceiling : -------.
Taiwan BEI : 0.02 mg/l (before on duty).
Safety Data Sheets (SDS)
1. Process should be located at least 17 meter (50 feet) away from open flames and all high temperature operations likely
to cause ignition of the styrene monomer vapor. 2. In venting styrene monomer vapors, consideration should be given to possible halogenation of the vapors by low concentrations of free chlorine and bromine with the resultant formation of lacrimations. 3. Process should be designed so that the operator is not exposed to direct contact with styrene monomer or the vapor. The technical problems of designing equipment, providing adequate ventilation and operating procedures which promise maximum security and economy, can best be handled by competent engineers. Due to the tendency of styrene monomer to form polymers which may plug equipment, all piping, valves, gauges, vents, tank openings, pressure relief devices, and engineering controls should be so designed and located that may be readily and periodically inspected and cleaned. 4. It is essential for safety that equipment be used and maintained as recommended by the manufacturer. 5. Tanks used to store or process styrene monomer should be closed vessels vented to a safe point of discharge in the outside atmosphere away from operating stations, roadways, and at least 17 meter (50 feet) from possible sources of ignitions. All sparks, flames, heated surface, or other sources ofignition should be kept away from all vents. It is advisable, to provide suction on vessels when inspection or observation openings are made, to minimize or eliminate escape of vapors. Personal protective equipment
Personal respirators (NIOSH Approved):
If the exposure limit is exceeded, a half-face organic vapor respirator may be worn for up to ten times the exposure limit or the maximum use concentration specified by the appropriate regulatory agency or respirator supplier, whichever is lowest. A full-face piece organic vapor respirator may be worn up to 50 times the exposure limit or the maximum use concentration specified by the appropriate regulatory agency or respirator supplier, whichever is lowest. For emergencies or instances where the exposure levels are not known, use a full-face piece positive-pressure, air-supplied respirator. (Warning: Air-purifying respirators do not protect workers in oxygen-deficient atmospheres.) Wear impervious protective clothing, including boots, gloves, lab coat, apron or coveralls, as appropriate, to prevent skin contact. Use chemical safety goggles and/or a full face shield where splashing is possible. Maintain eye wash fountain and quick-drench facilities in work area.
SECTION 9-PHYSICAL AND CHEMICAL PROPERTIES
Upper/lower explosive limits : 1.1%～7.0% Odour threshold : 0.017～1.9 ppm (detect) Initial boiling point/boiling range : 145.2℃ Partition coefficient : 3.05 (n-octanol/water) Decomposition temperature : Not available Flammability (solid/gas) : Not available
SECTION 10-STABILITY AND REACTIVITY
Vapor is explosive when exposed to heat or flame; reacts with oxygen above 40℃ (104℃) to form a heat-sensitive
explosive peroxide. On exposure to light and air, styrene slowly undergoes polymerization and oxidation with formation
of peroxides. Violent polymerization may be initiated by alkali metal-graphite composites,butyllithium, dibenzoyl
peroxide, azoisobutyronitrile or di-tert-butyl peroxide. Violent reaction with chlorosulfonic acid, oleum, sulfuric acid and
Safety Data Sheets (SDS)
Stable under normal temperatures and pressures.
Possibility of hazardous reaction
Hazardous polymerization possible with catalyst and heat.
Condition to avoid
Keep away from ignition sources (e.g. heat, sparks, and flames).
Incompatible with peroxides, aluminum chloride, strong acids, metallic salts, halogens, polymerization catalyst and
Hazardous decomposition products
Carbon dioxide and carbon monoxide may form when heated to decomposition.
SECTION 11-TOXICOLOGICAL INFORMATION
Routes of exposure
Eye, Skin, inhalation, Ingestion.
Symptoms (treatments as indicated in Section 4)
May cause irritation, redness, pain, and corneal damage. Causes irritation to skin. Symptoms include redness, itching, and pain. May produce blisters. May be absorbed through the skin. May cause irritation to the gastrointestinal tract. Symptoms may include nausea, vomiting and diarrhea. May cause central nervous system depression. Symptoms may include lethargy, drowsiness, staggering and sleepiness. May cause possible convulsions and risk of pulmonary edema. Causes irritation to the respiratory tract. Symptoms may include coughing, shortness of breath. A central nervous system depressant. Higher exposures can cause a build-up of fluid in the lungs (pulmonary edema), a medical emergency. Repeated exposure may cause nausea, vomiting, appetite loss, a sensation of drunkenness, general weakness, and functional disorders of the nervous system and liver. May cause dermatitis. Women may experience ovulation and menstrual disorders. May cause mutagenic and teratogenic effects. Persons with pre-existing skin disorders, eye problems, liver disease, central nervous system disorders, or impaired respiratory function may be more susceptible to the effects of the substance. Toxicity
LD50: 5000 mg/kg (rat, oral) LC50: 5640 ppm/4h (rat, inhalation) Irritation
Skin (rabbit): 100%-Moderate Eye (rabbit): 18 mg Chronic effect
ACGIH : A4-Not classifiable as a Human Carcinogen.
OSHA : Possible select carcinogen.
IARC : Group 2B carcinogen.
There are conflicting reports between exposure and birth defects and fetal loss. In one report, women who worked at the
most highly exposed jobs had offspring with lower birth weights than those of unexposed women.
This chemical does not seem to be teratogenic in experimental.
Safety Data Sheets (SDS)
RTECs reports reproductive effects in animals such as effects on weaning/lactation index, maternal effects, fetoxitity,
stillbirth, and post-implantation mortality.
An increased incidence of mutations such as chromosome aberrations and micronuclei in peripheral lymphocytes has
been reported in workers exposed occupationally. Some studies have found a slight increase in the incidence of sister
chromatic exchanges while no increase has been found in several other studies.
SECTION 12-ECOLOGICAL INFORMATION
LC (96 hr.) Fish: 25.1～74.8 mg/l
EC (48 hr.) Water flea: 23.0 mg/l, Unspecified Biocencentration factor (BCF): 13.5
Persistence and degradability
1. When released into the air, this material is expected to be readily degraded by reaction with photochemicallyproduced
2. When released into water, this material is expected to readily biodegrade. When released into water, this material is 3.When released into soil, this material is expected to readily biodegrade. Whenreleased into soil, this material is expected to quickly evaporate. Half-life (Air): 0.9～7.3 hr Half-life (Surface water): 336～672 hr Half-life (Ground water): 672～5040 hr Half-life (Soil): 336～672 hr Bioaccumulative potential
About 80%～97% will pass from your body through urination. After 4 days, it will be completely cleaned out.
Mobility in soil
In soil, substance will biodegrade and leach with a low to moderate soil mobility.
Other adverse effects: －
SECTION 13-DISPOSAL CONSIDERATIONS
Residues and spilled material are hazardous waste due to ignitability. Disposal must be in accordance with applicable federal, state, or local regulations. The container for this product can present explosion or fire hazards, even when emptied. To avoid risk of injury, do not cut, puncture, or weld on or near this container. Since the emptied containers retain product residue, follow label warnings even after container is emptied.
SECTION 14-TRANSPORTATION INFORMATION
THE NAME OF UN.TRANSPORT：Unsaturated Polyester Resin
HARMFULNESS CLASSIFICATION：The third kind of flammable liquid
THE METHOD OF TRANSPORT AND ATTENTIVE MATTERS：--
SECTION 15-REGULATORY INFORMATION
APPLICABLE REGULATION: Labourer's safe health facilities rule, dangerous thing and harmful
thing know the rule openly, the organic solvent is poisoned and prevented the rule, the harmful thing
Safety Data Sheets (SDS)
permits thickness standard, road traffic safety regulation, undertaking offal to store and remove
treatment method and facility standard in the labourer homework surrounding air.
SECTION 16-OTHER INFORMATION
MANUFACTURERS：EN CHUAN CHEMICAL INDUSTRIES CO.,LTD.
ADDRESS：No. 676, Taiping Road , Taiping District, Taichung City , Taiwan .
TABULATION TEL: +886-4-7990429-151
The Rev. «GreetingLine» Stanford Memorial Church October 1, 2006 And who knows whether or not you have come to the kingdom for Salt is good; but if salt has lost its saltiness, how can you season it? Have salt in yourselves, and be at peace with one Though not immediately obvious, there seems to be a message in today’s readings about redeeming the time. With this in mind, I’m reminde