3888-44-6

• 常用中文名：变色酸钠
• 常用英文名：chromotropic acid sodium salt
• CAS号：3888-44-6
• 分子式：C₁₀H₇NaO₈S₂
• 分子量：342.27800
• 相关类别： 有机原料 有机金属类化合物 有机钠
• 发布时间：2018-07-03 14:27:21
• 更新时间：2024-01-03 15:42:14

名称

• 中文名: 变色酸钠
• 英文名: sodium,4,5-dihydroxy-7-sulfonaphthalene-2-sulfonate
• 英文别名: Chromotropic acid,monosodium salt; 2,7-Naphthalenedisulfonic acid,4,5-dihydroxy-,monosodium salt; sodium 4,5-dihydroxy-7-sulfonaphthalene-2-sulfonate; MFCD00067682; CHROMOTROPIC ACID SODIUM SALT; Sodium hydrogen 4,5-dihydroxynaphthalene-2,7-disulphonate; EINECS 223-430-2

物化性质

• 密度: 1.929g/cm3
• 分子式: C₁₀H₇NaO₈S₂
• 分子量: 342.27800
• 精确质量: 341.94800
• PSA: 168.79000
• LogP: 2.56340
• 外观性状: 淡灰色至棕色粉末
• 储存条件:

  密封储存，储存于阴凉、干燥的库房。

• 稳定性: 常温常压下稳定， 避免与不相容材料，光照接触。 与强氧化剂，酸性氯化物，酸酐反应。
• 计算化学:

  1.疏水参数计算参考值（XlogP）:无

  2.氢键供体数量:3

  3.氢键受体数量:8

  4.可旋转化学键数量:2

  5.互变异构体数量:19

  6.拓扑分子极性表面积169

  7.重原子数量:21

  8.表面电荷:0

  9.复杂度:563

  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:2

• 更多:

  1. 性状：浅灰色或棕色粉末

  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）：未确定

  5. 沸点（ºC,常压）：未确定

  6. 沸点（ºC,15mmHg）：未确定

  7. 折射率(n20/D)：未确定

  8. 闪点（ºC）：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（mPa,20ºC）：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: Chromotropic Acid Sodium Salt(Techn) 60% (Titr.) Material Safety Data Sheet Synonym: 4,5-Dihydroxy-2,7-Naphthalenedisulfonic Acid Sodium Sal CAS: 3888-44-6 Section 1 - Chemical Product MSDS Name:Chromotropic Acid Sodium Salt(Techn) 60% (Titr.) Material Safety Data Sheet Synonym:4,5-Dihydroxy-2,7-Naphthalenedisulfonic Acid Sodium Sal Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS CAS# Chemical Name content EINECS# 3888-44-6 2,7-naphthalenedisulfonic acid 60 223-430-2 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. The toxicological properties of this material have not been fully investigated. Skin: May cause skin irritation. The toxicological properties of this material have not been fully investigated. Ingestion: May cause gastrointestinal irritation with nausea, vomiting and diarrhea. 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 immediately. 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: If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately. Inhalation: Get medical aid immediately. Remove from exposure and move to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Notes to Physician: 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 agent most appropriate to extinguish fire. Use water spray, dry chemical, carbon dioxide, or appropriate foam. Section 6 - ACCIDENTAL RELEASE MEASURES General Information: Use proper personal protective equipment as indicated in Section 8. Spills/Leaks: Clean up spills immediately, observing precautions in the Protective Equipment section. Sweep up or absorb material, then place into a suitable clean, dry, closed container for disposal. Avoid generating dusty conditions. Provide ventilation. Section 7 - HANDLING and STORAGE Handling: Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation. Storage: Keep container closed when not in use. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Section 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION Engineering Controls: Use adequate ventilation to keep airborne concentrations low. Use process enclosure, local exhaust ventilation, or other engineering controls to control airborne levels. Exposure Limits CAS# 3888-44-6: CAS# 7732-18-5: 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: A respiratory protection program that meets OSHA's 29 CFR 1910.134 and ANSI Z88.2 requirements or European Standard EN 149 must be followed whenever workplace conditions warrant respirator use. 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: Solid Color: white to off-white Odor: Not available. pH: Not available. Vapor Pressure: Not available. Viscosity: Not available. Boiling Point: Not available. Freezing/Melting Point: > 300 deg C Autoignition Temperature: Not available. Flash Point: Not available. Explosion Limits, lower: N/A Explosion Limits, upper: N/A Decomposition Temperature: Solubility in water: Insoluble. Specific Gravity/Density: Molecular Formula: C10H7NaO8S2 Molecular Weight: 342.27 Section 10 - STABILITY AND REACTIVITY Chemical Stability: Stable under normal temperatures and pressures. Conditions to Avoid: Incompatible materials, strong oxidants. Incompatibilities with Other Materials: Oxidizing agents. Hazardous Decomposition Products: Irritating and toxic fumes and gases. Hazardous Polymerization: Has not been reported Section 11 - TOXICOLOGICAL INFORMATION RTECS#: CAS# 3888-44-6 unlisted. CAS# 7732-18-5: ZC0110000 LD50/LC50: Not available. CAS# 7732-18-5: Oral, rat: LD50 = >90 mL/kg. Carcinogenicity: 2,7-naphthalenedisulfonic acid - Not listed by ACGIH, IARC, or NTP. Water - Not listed by ACGIH, IARC, or NTP. Other: See actual entry in RTECS for complete information. 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 Not regulated as a hazardous material. IMO Not regulated as a hazardous material. 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. S 28A After contact with skin, wash immediately with plenty of water. S 37 Wear suitable gloves. S 45 In case of accident or if you feel unwell, seek medical advice immediately (show the label where possible). WGK (Water Danger/Protection) CAS# 3888-44-6: No information available. CAS# 7732-18-5: No information available. Canada CAS# 3888-44-6 is listed on Canada's NDSL List. CAS# 7732-18-5 is listed on Canada's DSL List. CAS# 3888-44-6 is not listed on Canada's Ingredient Disclosure List. CAS# 7732-18-5 is not listed on Canada's Ingredient Disclosure List. US FEDERAL TSCA CAS# 3888-44-6 is listed on the TSCA inventory. CAS# 7732-18-5 is listed on the TSCA inventory. SECTION 16 - ADDITIONAL INFORMATION N/A

毒性和生态

生态学数据: 对环境有危害，对水体有污染，禁止进入水体。

安全

• 危害码 (欧洲): Xi
• 安全声明 (欧洲): S24/25