| Product Identification | Back to Contents | 【Product Name】
4-Methylbenzenesulfonic acid | 【Synonyms】
4-Methylbenzenesulfonic acid
Cyzac 4040
Nacure 1040
p-Methylphenylsulfonic acid
p-Toluenesulfonic acid
Toluene-4-sulfonic acid | 【CAS】
104-15-4 | 【Formula】
C7H8O3S | 【Molecular Weight】
172.2 | 【EINECS】
203-180-0 | 【RTECS】
XT6300000 | 【RTECS Class】
Other | 【Merck】
12,9671 | 【Beilstein/Gmelin】
472690 | 【Beilstein Reference】
4-11-00-00241 | 【EC Index Number】
016-030-00-2 | 【EC Class】
Irritant |
| Physical and Chemical Properties | Back to Contents | 【Appearance】
Monoclinic leaflets or prisms. | 【Solubility in water】
Very soluble | 【Melting Point】
106-107 | 【Boiling Point】
332 | 【Density】
1.24 g/cm3 (20 C) | 【Partition Coefficient】
.93 | 【Heat Of Vaporization】
| 【Heat Of Combustion】
-3530 kJ/mol | 【Usage】
Used as reagent in kirsten modification of kleber method (for lemon oil). |
| 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】
Wash the exposed area with copious amounts of water. A physician should examine the area if irritation or pain persists. | 【Eyes】
Exposed eyes should be irrigated with copious amounts of tepid water for at least 15 minutes. If irritation, pain, swelling, lacrimation, or photophobia persist, the patient should be seen in a health care facility. Irrigation: in a medical facility, irrigate with sterile saline for at least an hour. |
| Handling and Storage | Back to Contents | 【Storage】
Keep in a cool, dry, dark location in a tightly sealed container or cylinder. Keep away from incompatible materials, ignition sources and untrained individuals. Secure and label area. Protect containers/cylinders from physical damage. | 【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】
Inhalation may produce dyspnea, pleuritic chest pain, upper airway edema, pulmonary edema, hypoxemia, bronchospasm, pneumonitis, and persistent pulmonary function abnormalities. Airway hyperreactivity has also been reported. | 【Skin】
Contact with molten substance may cause severe burns to skin and eyes. See Inhalation. | 【Eyes】
See Inhalation. | 【Ingestion】
Ingestion of acids may result in burns, gastrointestinal bleeding, gastritis, perforations, dilation, edema, necrosis, vomiting, stenosis, fistula, and duodenal/jejunal injury. | 【Hazards】
When heated, vapors may form explosive mixtures with air: indoors, outdoors, and sewers explosion hazards. | 【UN (DOT)】
2585 |
| 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】
Abnormal neuropsychologic function has been reported following hydrochloric acid exposure from a leaking tanker truck. | 【Exposure limit(s)】
OEL-UNITED KINGDOM:TWA 10 ppm (25 mg/m3);STEL 15 ppm (35 mg/m3) | 【Poison Class】
3 |
| Fire Fighting Measures | Back to Contents | 【Flash Point】
184 | 【Fire Fighting】
Small Fires: Dry chemical, carbon dioxide or water spray. Large Fires: Dry chemical, carbon dioxide, alcohol-resistant foam or water spray. | 【Fire Potential】
Ignites after considerable preheating. |
| Accidental Release Measures | Back to Contents | 【Small spills/leaks】
ELIMINATE all ignition sources. Do not touch damaged containers or spilled material unless wearing appropriate protective clothing. Stop leak if you can do it without risk. 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 | 【Stability】
Normally stable; unstable at high temperature and pressure. | 【Incompatibilities】
Reacts with water. A strong acid which can react with common metals. Explosions can occur when using an analytical method involving sequential addition if acetic acid, aqueous p-toluenesulfonic acid and acetic anhydride to serum. | 【Combustion Products】
Fire may produce irritating, corrosive and/or toxic gases. |
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| Company Name: | J & K SCIENTIFIC LTD. |
| Tel: | 400-666-7788 +86-10-82848833 |
| Fax: | +86-10-82849933 |
| WebSite: | www.jkchemical.com |
| Company Name: | Meryer (Shanghai) Chemical Technology Co., Ltd. |
| Tel: | +86-(0)21-61259100(Shanghai) +86-(0)755-86170099(ShenZhen) +86-(0)10-59487313(Beijing) |
| Fax: | +86-(0)21-61259102(Shanghai) +86-(0)755-86170066(ShenZhen) +86-(0)10-88580358(Beijing) |
| WebSite: | www.meryer.com |
| Company Name: | BeiJing Hwrk Chemicals Limted |
| Tel: | 4006990298 010-57411839 020-31335234 021-51691807 |
| Fax: | 010-87653215 0757-86311057 021-55236763 |
| WebSite: | www.hwrkchemical.com |
| Company Name: | Energy Chemical |
| Tel: | 021-58432009 / 400-005-6266 |
| Fax: | 021-58436166-800 |
| WebSite: | www.energy-chemical.com |
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