20492-50-6

20492-50-6结构式
20492-50-6结构式
  • 常用中文名:trioxobis(pyridine)chromium
  • 常用英文名:trioxobis(pyridine)chromium
  • CAS号:20492-50-6
  • 分子式:C10H10CrN2O3
  • 分子量:258.19400
  • 发布时间:2016-02-29 14:47:18
  • 更新时间:2024-01-14 19:01:30
  • 氧化剂。氧化伯、仲醇成醛、酮,炔(烯)成炔(烯)酮。特别适用于对酸敏感的物质的氧化。


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英文名 pyridine,trioxochromium
英文别名 einecs 243-853-6
沸点 115.3ºC at 760 mmHg
分子式 C10H10CrN2O3
分子量 258.19400
闪点 20ºC
精确质量 258.01000
PSA 25.78000
LogP 1.80680
蒸汽压 22.8mmHg at 25°C
计算化学

1.疏水参数计算参考值(XlogP):无

2.氢键供体数量:0

3.氢键受体数量:5

4.可旋转化学键数量:0

5.互变异构体数量:无

6.拓扑分子极性表面积77

7.重原子数量:16

8.表面电荷:0

9.复杂度:92.8

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:3

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1.性状:红色晶体

2.溶解性:溶于无水二氯甲烷生成红色溶液

Name: Chromium(vi) oxide pyridine complex Material Safety Data Sheet
Synonym: None
CAS: 20492-50-6
Section 1 - Chemical Product MSDS Name:Chromium(vi) oxide pyridine complex Material Safety Data Sheet
Synonym:None

Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS
CAS# Chemical Name content EINECS#
20492-50-6 Chromium, trioxobis(pyridine)- ca.100 243-853-6
Hazard Symbols: C
Risk Phrases: 34

Section 3 - HAZARDS IDENTIFICATION
EMERGENCY OVERVIEW
Causes burns.Cancer suspect agent.
Potential Health Effects
Eye:
Causes eye burns. May cause chemical conjunctivitis and corneal damage.
Skin:
Causes skin burns. May cause skin rash (in milder cases), and cold and clammy skin with cyanosis or pale color.
Ingestion:
May cause severe and permanent damage to the digestive tract. Causes gastrointestinal tract burns. May cause perforation of the digestive tract. May cause systemic effects.
Inhalation:
Causes chemical burns to the respiratory tract. Aspiration may lead to pulmonary edema. May cause systemic effects.
Chronic:
Effects may be delayed.

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. Do NOT allow victim to rub eyes or keep eyes closed.
Extensive irrigation with water is required (at least 30 minutes).
Skin:
Get medical aid immediately. Flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes.
Wash clothing before reuse. Destroy contaminated shoes.
Ingestion:
Do not induce vomiting. 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:
Remove from exposure and move to fresh air immediately. If breathing is difficult, give oxygen. Do NOT use mouth-to-mouth resuscitation.
If breathing has ceased apply artificial respiration using oxygen and a suitable mechanical device such as a bag and a mask.
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.

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. Provide ventilation.

Section 7 - HANDLING and STORAGE
Handling:
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Avoid contact with eyes, skin, and clothing. Do not get in eyes, on skin, or on clothing. Keep container tightly closed. Avoid ingestion and inhalation. Do not ingest or inhale. Use with adequate ventilation. Discard contaminated shoes.
Storage:
Keep container closed when not in use. Store in a cool, dry, well-ventilated area away from incompatible substances. Corrosives area.

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# 20492-50-6: United Kingdom, WEL - TWA: (listed as chromium (vi) compounds): 0 mg/m3 TWA (as Cr) United Kingdom, WEL - STEL: (listed as chromium (vi) compounds): mg/m3 STEL (as Cr) Belgium - TWA: (listed as chromium (vi) compounds (certain water insoluble forms)): 0.01 mg/m3 VLE (as Cr) France - VME: (listed as chromium (vi) compounds): 0.05 mg/m3 VME Cr) Germany: (listed as chromium (vi) compounds): 0.05 mg/m3 VME (as Japan: (listed as chromium (vi) compounds): 0.05 mg/m3 OEL (as Cr 0.01 mg/m3 OEL (certain compounds, as Cr) Spain: (listed as chromium (vi) compounds (certain water insolubl forms)): 0.01 mg/m3 VLA-ED (as Cr) 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 gloves and 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.

Section 9 - PHYSICAL AND CHEMICAL PROPERTIES

Physical State: Not available.
Color: Not available.
Odor: Not available.
pH: Not available.
Vapor Pressure: Not available.
Viscosity: Not available.
Boiling Point: Not available.
Freezing/Melting Point: Not available.
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: C10H10CrN2O3
Molecular Weight: 258.19

Section 10 - STABILITY AND REACTIVITY
Chemical Stability:
Stable under normal temperatures and pressures.
Conditions to Avoid:
Incompatible materials, strong oxidants.
Incompatibilities with Other Materials:
None reported.
Hazardous Decomposition Products:
Irritating and toxic fumes and gases.
Hazardous Polymerization: Has not been reported

Section 11 - TOXICOLOGICAL INFORMATION
RTECS#:
CAS# 20492-50-6 unlisted.
LD50/LC50:
Not available.
Carcinogenicity:
Chromium, trioxobis(pyridine)- - California: carcinogen, initial date 2/27/87 (listed as Chromium (VI) NTP: Known carcinogen (listed as Chromium (VI) compounds).
IARC: Group 1 carcinogen (listed as Chromium (VI) compounds).

Section 12 - ECOLOGICAL INFORMATION
Other No information available.

Section 13 - DISPOSAL CONSIDERATIONS
Dispose of in a manner consistent with federal, state, and local regulations.

Section 14 - TRANSPORT INFORMATION

IATA
Shipping Name: CORROSIVE LIQUID, BASIC, ORGANIC, N.O.S.*
Hazard Class: 8
UN Number: 3267
Packing Group: III
IMO
Shipping Name: CORROSIVE LIQUID, BASIC, ORGANIC, N.O.S.
Hazard Class: 8
UN Number: 3267
Packing Group: III
RID/ADR
Shipping Name: CORROSIVE LIQUID, BASIC, ORGANIC, N.O.S.
Hazard Class: 8
UN Number: 3267
Packing group: III

Section 15 - REGULATORY INFORMATION

European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: C
Risk Phrases:
R 34 Causes burns.
Safety Phrases:
S 25 Avoid contact with eyes.
S 36/37/39 Wear suitable protective clothing, gloves
and eye/face protection.
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# 20492-50-6: No information available.
Canada
CAS# 20492-50-6 is listed on Canada's NDSL List.
CAS# 20492-50-6 is not listed on Canada's Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 20492-50-6 is listed on the TSCA inventory.


SECTION 16 - ADDITIONAL INFORMATION
N/A

在装有密封搅拌器、温度计和干燥管的1L干燥三颈瓶中加入500ml(0.2mol)无水吡啶。搅拌下,在冰浴中将吡啶冷至约15℃,为了避免反应时过量未反应的三氧化铬聚积及其反应时温度迅速升高,吡啶的起始温度决不应低于10℃。不时移去干燥管,通过玻璃漏斗或玻璃纸圆锥筒在30min内分次加入68g(0.68mol)用五氧化二磷干燥过的三氧化铬,加入速度以反应温度不超过20℃,三氧化铬能与吡啶迅速反应而不粘附于瓶壁为宜。加入三氧化铬后,溶液中析出深黄色絮结沉淀,混合物黏度增加。加料完毕,将混合物搅拌并慢慢热至室温,1h内混合物黏度减小,最初生成的黄色产物变为深红色大颗粒晶体。停止搅拌,让晶体沉集于瓶底,倾出上层吡啶,用250ml无水石油醚将晶体洗涤数次。在尽可能避免接触空气的情况下,用玻璃砂芯漏斗产品,以无水石油醚洗涤。在1.33kpa下干燥,得150~160g(85%~91%)二吡啶三氧化铬红色晶体。