| Product Identification | Back to Contents | 【Product Name】
O,O,O',O'-Tetramethyl O,O'-(thiodi-4,1-phenylene) phosphorothioate | 【Synonyms】
Difos
O,O-(Thiodi-4,1-phenylene)phosphorothioic acid, O,O,O,O-tetramethyl ester
O,O,O',O'-Tetramethyl O,O'-thiodi-p-phenylene bis(phosphorothioate)
Phosphorothioic acid, O,O'-(thiodi-4,1-phenylene) o,O,O',O'tetramethyl ester | 【CAS】
3383-96-8 | 【Formula】
C16H20O6P2S3 | 【Molecular Weight】
466.48 | 【EINECS】
222-191-1 | 【RTECS】
TF6890000 | 【RTECS Class】
Agricultural Chemical and Pesticide; Reproductive Effector; Primary Irritant | 【Merck】
12,9286 | 【Beilstein/Gmelin】
1896901 |
| Physical and Chemical Properties | Back to Contents | 【Appearance】
White crystalline solid or liquid. Technical grade is a viscous brown liquid. | 【Solubility in water】
insoulble | 【Melting Point】
30.6 | 【Vapor Pressure】
9.0e-10 | 【Density】
1.32 g/cm3 (20 C) | 【Usage】
Larvicide for mosquitoes, black flies & midges & in other applications. |
| First Aid Measures | Back to Contents | 【Ingestion】
Seek medical assistance. | 【Inhalation】
Move victim to fresh air. Apply artificial respiration if victim is not breathing. Do not use mouth-to-mouth method if victim ingested or inhaled the substance; induce artificial respiration with the aid of a pocket mask equipped with a one-way valve or other proper respiratory medical device. Administer oxygen if breathing is difficult. | 【Skin】
Remove and isolate contaminated clothing and shoes. Immediately flush with running water for at least 20 minutes. For minor skin contact, avoid spreading material on unaffected skin. | 【Eyes】
Immediately flush with running water for at least 20 minutes. |
| Handling and Storage | Back to Contents | 【Storage】
Store in cool, dry, well ventilated, secure area out of reach children and animals. | 【Handling】
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood. |
| Hazards Identification | Back to Contents | 【Inhalation】
Highly toxic, may be fatal if inhaled, swallowed or absorbed through skin. Effects of contact or inhalation may be delayed. | 【Skin】
Profuse sweating is common. Pallor may be noted. Dermal sensitization has been reported. | 【Eyes】
Constriction of the pupil, tearing, and blurred vision are common. Prolonged dialation of the pupils may occur. Salivation commonly occurs. | 【Ingestion】
Nausea, vomiting, abdominal cramps, and diarrhea are common muscarinic effects. Both painless and frank clinical pancreatitis have been reported. | 【Hazards】
Containers may explode when heated. | 【UN (DOT)】
2783 |
| Exposure Controls/Personal Protection | Back to Contents | 【Personal Protection】
Wear appropriate protective gloves, clothing and goggles. | 【Respirators】
Wear positive pressure self-contained breathing apparatus (SCBA). | 【Exposure Effects】
Reduced body temperature or elevated body temperature may occur. Low heart rate and abnormally low blood pressure may develop after moderate to severe poisoning. Rapid heart rate, elevated blood pressure, and changes in respiratory rate may also occur. Early giddiness, anxiety headache, and restlessness followed by ataxia, drowsiness, and confusion are common with moderate to severe exposures. Sporadic reports of human birth defects related to organophosphates have not been fully verified. | 【Exposure limit(s)】
TLV: ppm; 10 mg/m3 (ACGIH 1994-1995). OSHA PEL: TWA 15 mg/m3 (total) TWA 5 mg/m3 (resp) NIOSH REL: TWA 10 mg/m3 (total) TWA 5 mg/m3 (resp) | 【Poison Class】
4 |
| Fire Fighting Measures | Back to Contents | 【Flash Point】
43-93 (closed cup) | 【Fire Fighting】
Dry chemicals, carbon dioxide for small fires. Water spray, foam for large fires. | 【Fire Potential】
Combustible material: may burn but does not ignite readily. |
| Accidental Release Measures | Back to Contents | 【Small spills/leaks】
Do not touch damaged containers or spilled material unless wearing appropriate protective clothing. Stop leak if you can do it without risk. Cover with plastic sheet to prevent spreading. Absorb or cover with dry earth, sand or other non-combustible material and transfer to containers. DO NOT GET WATER INSIDE CONTAINERS. |
| Stability and Reactivity | Back to Contents | 【Incompatibilities】
Incompatible with alkaline substances. | 【Stability】
Stable indefinitely at room temperature; no observed hydrolysis at pH 8 at room temperature for several wk or at pH 11 at 40 C for several hr. Optimum stability at pH 5-7 stable @ 25 C and in natural fresh and saline waters. | 【Decomposition】
When heated to decomposition it emits toxic phosphorus oxides and sulfur oxides fumes. | 【Combustion Products】
Fire may produce irritating, corrosive and/or toxic gases. |
|
| Company Name: |
J & K SCIENTIFIC LTD. |
| Tel: |
010-82848833 400-666-7788 |
| Fax: |
86-10-82849933 |
| WebSite: |
http://www.jkchemical.com |
| Company Name: |
BEST-REAGENT |
| Tel: |
400-1166-196 18981987031 |
| Fax: |
028-84555506 800101999 |
| WebSite: |
http://www.hx-r.com/ |
| Company Name: |
Spectrum Chemical Manufacturing Corp. |
| Tel: |
021-021-021-67601398-809-809-809 15221380277 |
| Fax: |
021-57711696 |
| WebSite: |
www.spectrumchemical.com/oa_html/index.jsp?minisite=10020&respid=22372&language=us |
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