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21548-73-2生产厂家

21548-73-2价格

21548-73-2

21548-73-2结构式
21548-73-2结构式

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中文名 硫化银
英文名 silver(i) sulfide
英文别名 Silver(1+) sulfidosilver
MFCD00003406
EINECS 244-438-2
Disilver(1+) sulfide
密度 7.234 g/mL at 25 °C(lit.)
熔点 845 °C(lit.)
分子式 Ag2S
分子量 247.801
精确质量 245.782257
PSA 25.30000
LogP 0.64820
外观性状 黑色立方体晶体
储存条件

保持贮藏器密封

放入紧密的贮藏器内,储存在阴凉,干燥的地方

稳定性

如果遵照规格使用和储存则不会分解

避免接触氧化物,酸。β-Ag2S为灰黑色正交晶体,相对密度7.326,在175℃转化为α-Ag2S;α-Ag2S为黑色立方晶体,相对密度7.317,熔点825℃。硫化银极难溶于水;几乎不溶于稀的非氧化性酸;不溶于氨水和氨盐溶液;但溶于碱金属氰化物溶液和硝酸;浓H2SO4能将Ag2S转化为硫酸银和硫。硫化银在室温和空气中是稳定的,但在真空中加热至350℃以上,则有丝状金属银生成。若直接在空气中加热,则硫化银易被氧化成硫酸银。

计算化学

1.疏水参数计算参考值(XlogP):无

2.氢键供体数量:1

3.氢键受体数量:1

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1

7.重原子数量:3

8.表面电荷:0

9.复杂度:2.8

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

更多

1.性状:浅灰黑色重质粉末。

2.密度(g/mL,25/4℃):7.234

3.相对蒸汽密度(g/mL,空气=1):未确定

4.熔点(ºC):825

5.沸点(ºC,常压):未确定

6.沸点(ºC,5.2kPa):未确定

7.折射率: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(kPa,25ºC):未确定

12.饱和蒸气压(kPa,60ºC):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:不溶于水和氨水。溶于硝酸、硫酸和氰化碱溶液。

Name: Silver (I) sulfide 99.9% Material Safety Data Sheet
Synonym: Non
CAS: 21548-73-2
Section 1 - Chemical Product MSDS Name:Silver (I) sulfide 99.9% Material Safety Data Sheet
Synonym:Non

Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS
CAS# Chemical Name content EINECS#
21548-73-2 Silver sulfide 99.9 244-438-2
Hazard Symbols: None Listed.
Risk Phrases: None Listed.

Section 3 - HAZARDS IDENTIFICATION
EMERGENCY OVERVIEW
Light sensitive.The toxicological properties of this material have not been fully investigated.
Potential Health Effects
Eye:
May cause eye irritation. No information regarding eye irritation and other potential effects was found.
Skin:
May cause skin irritation. No information regarding skin irritation and other potential effects was found.
Ingestion:
The toxicological properties of this substance have not been fully investigated.
Inhalation:
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:
Flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes. Get medical aid if irritation develops or persists.
Ingestion:
If victim is conscious and alert, give 2-4 cupfuls of milk or water.
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.

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.

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. Avoid ingestion and inhalation.
Storage:
Store in a cool, dry place. Keep container closed when not in use.

Section 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION
Engineering Controls:
Use process enclosure, local exhaust ventilation, or other engineering controls to control airborne levels.
Exposure Limits CAS# 21548-73-2: Japan: (listed as silver compounds): 0.01 mg/m3 OEL (as Ag) 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 minimize contact with skin.
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: Solid
Color: black
Odor: Not available.
pH: Not available.
Vapor Pressure: Not available.
Viscosity: Not available.
Boiling Point: Not available.
Freezing/Melting Point: 845 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: 7.2340g/cm3
Molecular Formula: Ag2S
Molecular Weight: 247.80

Section 10 - STABILITY AND REACTIVITY
Chemical Stability:
Stable under normal temperatures and pressures.
Conditions to Avoid:
None reported.
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# 21548-73-2 unlisted.
LD50/LC50:
Not available.
Carcinogenicity:
Silver sulfide - 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
Not regulated as a hazardous material.
IMO
Not regulated as a hazardous material.
RID/ADR
Shipping Name: Not regulated.
Hazard Class:
UN Number:
Packing group:

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# 21548-73-2: 0
Canada
CAS# 21548-73-2 is listed on Canada's DSL List.
CAS# 21548-73-2 is not listed on Canada's Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 21548-73-2 is listed on the TSCA inventory.


SECTION 16 - ADDITIONAL INFORMATION
N/A

毒理学数据:

有刺激性

生态学数据:

通常来说对水是不危害的,若无政府许可,勿将材料排入周围环境

个人防护装备 dust mask type N95 (US);Eyeshields;Gloves
危害码 (欧洲) Xi: Irritant;
风险声明 (欧洲) R36/37/38
安全声明 (欧洲) S26-S36
危险品运输编码 NONH for all modes of transport
WGK德国 3

1.在90~100℃条件下,将氧化银(Ⅰ)与硫反应生成硫化银(Ⅰ),当有水气存在时,Ag2SO4也能被过量硫转化为硫化银(Ⅰ)。

2.将硫代硫酸钠与氧化银(Ⅰ)、硝酸银等可溶性银盐反应,可得硫化银(Ⅰ)

3.将可溶性银盐与可溶性硫化物反应,制得硫化银(Ⅰ)