480-65-9

• 常用中文名：4,6-二甲基邻吡喃酮
• 常用英文名：2H-Pyran-5-carboxylicacid, 4,6-dimethyl-2-oxo-
• CAS号：480-65-9
• 分子式：C₈H₈O₄
• 分子量：168.14700
• 相关类别： 化学试剂 有机试剂 脂肪酸
• 发布时间：2018-04-10 08:00:00
• 更新时间：2024-01-10 09:41:35

名称

• 中文名: 4,6-二甲基邻吡喃酮
• 英文名: isodehydroacetic acid
• 中文别名: 4,6-二甲基香豆酸
• 英文别名: 4,6-DIMETHYL-2-OXO-2H-PYRAN-5-CARBOXYLIC ACID; EINECS 207-554-4; ISODEHYDRACETIC ACID; Isodehydroacetic acid; 2,4-dimethyl-6-oxopyran-3-carboxylic acid; MFCD00023864

物化性质

• 密度: 1.326g/cm3
• 沸点: 303.4ºC at 760mmHg
• 熔点: 154-156ºC
• 分子式: C₈H₈O₄
• 分子量: 168.14700
• 闪点: 125.8ºC
• 精确质量: 168.04200
• PSA: 67.51000
• LogP: 0.95480
• 蒸汽压: 0.000215mmHg at 25°C
• 折射率: 1.4530 (estimate)
• 储存条件:

  密封储存，储存于阴凉、干燥的库房。

• 稳定性:

  避免与不相容材料接触。与强氧化剂反应。

• 计算化学:

  1.疏水参数计算参考值（XlogP）:0.3

  2.氢键供体数量:1

  3.氢键受体数量:4

  4.可旋转化学键数量:1

  5.互变异构体数量:5

  6.拓扑分子极性表面积63.6

  7.重原子数量:12

  8.表面电荷:0

  9.复杂度:309

  10.同位素原子数量:0

  11.确定原子立构中心数量:0

  12.不确定原子立构中心数量:0

  13.确定化学键立构中心数量:0

  14.不确定化学键立构中心数量:0

  15.共价键单元数量:1

• 更多:

  1. 性状：白色结晶状粉末

  2. 密度（g/mL,25℃）：未确定

  3. 相对蒸汽密度（g/mL,空气=1）：未确定

  4. 熔点（ºC）：154-156

  5. 沸点（ºC,常压）：未确定

  6. 沸点（ºC,11mmHg）：未确定

  7. 折射率(n20/D)：未确定

  8. 闪点（ºF）：未确定

  9. 比旋光度（º）：未确定

  10. 自燃点或引燃温度（ºC）：未确定

  11. 蒸气压（mmHg,25ºC）：未确定

  12. 饱和蒸气压（kPa,25ºC）：未确定

  13. 燃烧热（KJ/mol）：未确定

  14. 临界温度（ºC）：未确定

  15. 临界压力（KPa）：未确定

  16. 油水（辛醇/水）分配系数的对数值：未确定

  17. 爆炸上限（%,V/V）：未确定

  18. 爆炸下限（%,V/V）：未确定

  19. 溶解性：未确定

MSDS

Name: Isodehydroacetic Acid 98% Material Safety Data Sheet Synonym: 5-Carboxy-4,6-Dimethyl-2-Pyron CAS: 480-65-9 Section 1 - Chemical Product MSDS Name:Isodehydroacetic Acid 98% Material Safety Data Sheet Synonym:5-Carboxy-4,6-Dimethyl-2-Pyron Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS CAS# Chemical Name content EINECS# 480-65-9 Isodehydroacetic Acid 98% 207-554-4 Hazard Symbols: None Listed. Risk Phrases: None Listed. Section 3 - HAZARDS IDENTIFICATION EMERGENCY OVERVIEW The toxicological properties of this material have not been fully investigated. Potential Health Effects Eye: May cause eye irritation. Skin: May cause skin irritation. Ingestion: May cause irritation of the digestive tract. The toxicological properties of this substance have not been fully investigated. Inhalation: May cause respiratory tract irritation. The toxicological properties of this substance have not been fully investigated. Chronic: No information found. Section 4 - FIRST AID MEASURES Eyes: Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid. Skin: Get medical aid. Flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse. Ingestion: Never give anything by mouth to an unconscious person. Get medical aid. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water. Wash mouth out with water. Inhalation: Remove from exposure and move to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid. Notes to Physician: Treat symptomatically and supportively. Section 5 - FIRE FIGHTING MEASURES General Information: As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Extinguishing Media: Use water spray, dry chemical, carbon dioxide, or chemical foam. Section 6 - ACCIDENTAL RELEASE MEASURES General Information: Use proper personal protective equipment as indicated in Section 8. Spills/Leaks: Vacuum or sweep up material and place into a suitable disposal container. Clean up spills immediately, observing precautions in the Protective Equipment section. Avoid generating dusty conditions. Provide ventilation. Section 7 - HANDLING and STORAGE Handling: Wash thoroughly after handling. Use with adequate ventilation. Minimize dust generation and accumulation. Avoid breathing dust, vapor, mist, or gas. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation. Storage: Store in a cool, dry place. Store in a tightly closed container. Section 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION Engineering Controls: Facilities storing or utilizing this material should be equipped with an eyewash facility and a safety shower. Use adequate ventilation to keep airborne concentrations low. Exposure Limits CAS# 480-65-9: Personal Protective Equipment Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure. Respirators: Follow the OSHA respirator regulations found in 29 CFR 1910.134 or European Standard EN 149. Use a NIOSH/MSHA or European Standard EN 149 approved respirator if exposure limits are exceeded or if irritation or other symptoms are experienced. Section 9 - PHYSICAL AND CHEMICAL PROPERTIES Physical State: Crystalline powder Color: white Odor: Not available. pH: Not available. Vapor Pressure: Not available. Viscosity: Not available. Boiling Point: Not available. Freezing/Melting Point: 154 - 156 deg C Autoignition Temperature: Not available. Flash Point: Not available. Explosion Limits, lower: Not available. Explosion Limits, upper: Not available. Decomposition Temperature: Solubility in water: Specific Gravity/Density: Molecular Formula: C8H10O4 Molecular Weight: 170.0676 Section 10 - STABILITY AND REACTIVITY Chemical Stability: Not currently available. Conditions to Avoid: Incompatible materials, dust generation. Incompatibilities with Other Materials: Oxidizing agents. Hazardous Decomposition Products: Carbon monoxide, carbon dioxide. Hazardous Polymerization: Will not occur. Section 11 - TOXICOLOGICAL INFORMATION RTECS#: CAS# 480-65-9 unlisted. LD50/LC50: Not available. Carcinogenicity: Isodehydroacetic Acid - Not listed by ACGIH, IARC, or NTP. Section 12 - ECOLOGICAL INFORMATION Section 13 - DISPOSAL CONSIDERATIONS Dispose of in a manner consistent with federal, state, and local regulations. Section 14 - TRANSPORT INFORMATION IATA Shipping Name: Not regulated. Hazard Class: UN Number: Packing Group: IMO Shipping Name: Not regulated. Hazard Class: UN Number: Packing Group: RID/ADR Not regulated as a hazardous material. Section 15 - REGULATORY INFORMATION European/International Regulations European Labeling in Accordance with EC Directives Hazard Symbols: Not available. Risk Phrases: Safety Phrases: S 24/25 Avoid contact with skin and eyes. WGK (Water Danger/Protection) CAS# 480-65-9: No information available. Canada None of the chemicals in this product are listed on the DSL/NDSL list. CAS# 480-65-9 is not listed on Canada's Ingredient Disclosure List. US FEDERAL TSCA CAS# 480-65-9 is not listed on the TSCA inventory. It is for research and development use only. SECTION 16 - ADDITIONAL INFORMATION N/A

安全

• 危害码 (欧洲): Xi
• 风险声明 (欧洲): 36
• 安全声明 (欧洲): S24/25
• 海关编码: 2932209090

上下游产品

上游产品  5
41264-06-6 141-97-9 3385-34-0 105-45-3
7664-93-9
下游产品  9
41264-06-6 15058-72-7 24186-78-5 141-79-7
124-38-9 675-09-2 7470-47-5 76877-03-7
924-59-4

海关

海关编码	2932209090
中文概述	2932209090. 其他内酯. 增值税率:17.0%. 退税率:13.0%. 监管条件:无. 最惠国关税:6.5%. 普通关税:20.0%
申报要素	品名, 成分含量, 用途
Summary	2932209090. other lactones. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%