tungsten carbide

物化性质

外观与性状：

灰色至黑色粉末

密度：

15.63 g/cm3

熔点：

2870ºC

沸点：

6000ºC

存储条件/存储方法：

应贮存在阴凉、干燥的库房中，运输中要注意包装容器完好，防雨淋和防日光曝晒

稳定性相关：

常温常压下稳定

避免的物料 氧化物.溶于硝酸与氢氟酸的混酸和王水中，不溶于冷水。相对密度d181563。耐酸性强。硬度高。弹性模量大。

灰色带有金属光泽的粉末，含理论结合碳为6.13%（质量分数）。耐酸性强［108］。属于六方晶系，a=0.2900nm，c=0.2831nm。密度15.7g/cm3、微维氏硬度（负荷50g）为2080kg/mm2。很硬、弹性率也大（72700kg/mm2）。熔点虽高（据记载有2600℃，也有2870℃，因为熔融时发生分解所以不准确），但因形成蒸气压高的多孔性氧化物，故耐酸性下降。沸点6000℃，不溶于冷水，溶于HNO3和HF的混合酸中。

其它信息：

1. 性状：灰色带有金属光泽的粉末。

2. 密度（g/mL,18℃）：15.63

3. 相对蒸汽密度（g/mL,空气=1）：未确定

4. 熔点（ºC）：2870

5. 沸点（ºC,常压）：6000

6. 沸点（ºC，1mmHg）：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（20ºC）：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，溶于硝酸和氢氟酸的混合液和王水。

20. 莫氏硬度：9

安全信息

外观与性状：

灰色至黑色粉末

密度：

15.63 g/cm3

熔点：

2870ºC

沸点：

6000ºC

存储条件/存储方法：

应贮存在阴凉、干燥的库房中，运输中要注意包装容器完好，防雨淋和防日光曝晒

稳定性相关：

常温常压下稳定

避免的物料 氧化物.溶于硝酸与氢氟酸的混酸和王水中，不溶于冷水。相对密度d181563。耐酸性强。硬度高。弹性模量大。

灰色带有金属光泽的粉末，含理论结合碳为6.13%（质量分数）。耐酸性强［108］。属于六方晶系，a=0.2900nm，c=0.2831nm。密度15.7g/cm3、微维氏硬度（负荷50g）为2080kg/mm2。很硬、弹性率也大（72700kg/mm2）。熔点虽高（据记载有2600℃，也有2870℃，因为熔融时发生分解所以不准确），但因形成蒸气压高的多孔性氧化物，故耐酸性下降。沸点6000℃，不溶于冷水，溶于HNO3和HF的混合酸中。

其它信息：

1. 性状：灰色带有金属光泽的粉末。

2. 密度（g/mL,18℃）：15.63

3. 相对蒸汽密度（g/mL,空气=1）：未确定

4. 熔点（ºC）：2870

5. 沸点（ºC,常压）：6000

6. 沸点（ºC，1mmHg）：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（20ºC）：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，溶于硝酸和氢氟酸的混合液和王水。

20. 莫氏硬度：9

毒理性

CHEMICAL IDENTIFICATION

RTECS NUMBER :

YO7250000

CHEMICAL NAME :

Tungsten carbide

CAS REGISTRY NUMBER :

12070-12-1

LAST UPDATED :

199806

DATA ITEMS CITED :

21

MOLECULAR FORMULA :

C-W

MOLECULAR WEIGHT :

195.86

WISWESSER LINE NOTATION :

.WO..C

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

MUTATION DATA

TYPE OF TEST :

DNA damage

TEST SYSTEM :

Human Leukocyte

REFERENCE :

MUREAV Mutation Research. (Elsevier Science Pub. B.V., POB 211, 1000 AE Amsterdam, Netherlands) V.1- 1964- Volume(issue)/page/year: 392,31,1997 *** REVIEWS *** ACGIH TLV-TWA 5 mg(W)/m3; STEL 10 mg(W)/m3 DTLVS* The Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) booklet issues by American Conference of Governmental Industrial Hygienists (ACGIH), Cincinnati, OH, 1996 Volume(issue)/page/year: TLV/BEI,1997 *** U.S. STANDARDS AND REGULATIONS *** MSHA STANDARD-air:TWA 5 mg(W)/m3 DTLVS* The Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) booklet issues by American Conference of Governmental Industrial Hygienists (ACGIH), Cincinnati, OH, 1996 Volume(issue)/page/year: 3,272,1971 *** OCCUPATIONAL EXPOSURE LIMITS *** OEL-AUSTRALIA:TWA 5 mg(W)/m3;STEL 10 mg(W)/m3 JAN 1993 OEL-BELGIUM:TWA 5 mg(W)/m3;STEL 10 mg(W)/m3 JAN 1993 OEL-DENMARK:TWA 5 mg(W)/m3 JAN 1993 OEL-FINLAND:TWA 5 mg(W)/m3 JAN 1993 OEL-THE NETHERLANDS:TWA 5 mg(W)/m3 JAN 1993 OEL-THE PHILIPPINES:TWA 1 mg(W)/m3 JAN 1993 OEL-SWEDEN:TWA 5 mg(W)/m3 JAN 1993 OEL-SWITZERLAND:TWA 5 mg(W)/m3 JAN 1993 OEL-UNITED KINGDOM:TWA 5 mg(W)/m3;STEL 10 mg(W)/m3 JAN 1993 OEL IN BULGARIA, COLOMBIA, JORDAN, KOREA check ACGIH TLV OEL IN NEW ZEALAND, SINGAPORE, VIETNAM check ACGIH TLV *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA ***NIOSH RECOMMENDED EXPOSURE LEVEL (REL) : NIOSH REL TO CEMENTED TUNGSTEN CARBIDE-air:10H TWA 0.1 mg(Co)/m3REFERENCE : NIOSH* National Institute for Occupational Safety and Health, U.S. Dept. of Health, Education, and Welfare, Reports and Memoranda. Volume(issue)/page/year: DHHS #92-100,1992NIOSH RECOMMENDED EXPOSURE LEVEL (REL) : NIOSH REL TO TUNGSTEN, insoluble-air:TWA 5 mg(W)/m3;STEL 10 mg/m3REFERENCE : NIOSH* National Institute for Occupational Safety and Health, U.S. Dept. of Health, Education, and Welfare, Reports and Memoranda. Volume(issue)/page/year: DHHS #92-100,1992NIOSH RECOMMENDED EXPOSURE LEVEL (REL) : NIOSH REL TO CEMENTED TUNGSTEN CARBIDE-air:10H TWA 0.015 mg/m3REFERENCE : NIOSH* National Institute for Occupational Safety and Health, U.S. Dept. of Health, Education, and Welfare, Reports and Memoranda. Volume(issue)/page/year: DHHS #92-100,1992NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - X2977 No. of Facilities: 158 (estimated) No. of Industries: 4 No. of Occupations: 7 No. of Employees: 3395 (estimated) No. of Female Employees: 297 (estimated)

毒理学数据：

1. 致突变数据：人类白细胞微核测试，50mg/L；钨粉尘能引起支气管周炎、细支气管周炎、闭锁性细支气管炎和萎缩性气肿。碳化钨会引起肺脏的淋巴组织细胞的增生性反应，并逐渐出现硬化。血管壁增厚并均匀化。工作中接触碳化钨粉尘的人员胃肠道功能紊乱，肾受到刺激，上呼吸道出现卡他性炎症。

生态数据：

通常对水是不危害的，若无政府许可，勿将材料排入周围环境。

MSDS

Name:	Tungsten Carbide 99% Material Safety Data Sheet
Synonym:	Tungsten Monocarbide
CAS:	12070-12-1

Section 1 - Chemical Product   MSDS Name:Tungsten Carbide 99% Material Safety Data Sheet
Synonym:Tungsten Monocarbide
Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS

CAS#	Chemical Name	content	EINECS#
12070-12-1	Tungsten Carbide	99	235-123-0

Hazard Symbols: T
Risk Phrases: 23
Section 3 - HAZARDS IDENTIFICATION
  EMERGENCY OVERVIEW
Toxic by inhalation.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:
Get medical aid. Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or 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:
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:
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. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Avoid ingestion and inhalation.
Storage:
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:
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# 12070-12-1: United Kingdom, WEL - TWA: (listed as tungsten, insoluble compoun 5 mg/m3 TWA (as W) United Kingdom, WEL - STEL: (listed as tungsten, insoluble compounds): 10 mg/m3 STEL (as W) Belgium - TWA: (listed as tungsten, insoluble compounds): 5 mg/m3 (as W) Belgium - STEL: (listed as tungsten, insoluble compounds): 10 mg/ VLE (as W) Malaysia: (listed as tungsten, insoluble compounds): 5 mg/m3 TWA W) Netherlands: (listed as tungsten, insoluble compounds): 5 mg/m3 M (as W) Russia: 6 mg/m3 TWA (as W) Spain: (listed as tungsten, insoluble compounds): 5 mg/m3 VLA-ED W) Spain: (listed as tungsten, insoluble compounds): 10 mg/m3 VLA-EC W) 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.
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: Not available.
Autoignition Temperature: Not applicable.
Flash Point: Not applicable.
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature:
Solubility in water:
Specific Gravity/Density:
Molecular Formula: CW
Molecular Weight: 195.86
Section 10 - STABILITY AND REACTIVITY
  Chemical Stability:
Stable under normal temperatures and pressures.
Conditions to Avoid:
Incompatible materials, dust generation, excess heat, strong oxidants.
Incompatibilities with Other Materials:
Oxidizing agents.
Hazardous Decomposition Products:
Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.
Hazardous Polymerization: Has not been reported
Section 11 - TOXICOLOGICAL INFORMATION
  RTECS#:
CAS# 12070-12-1: YO7250000 LD50/LC50:
Not available.
Carcinogenicity:
Tungsten Carbide - 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: T
Risk Phrases:
R 23 Toxic by inhalation.
Safety Phrases:
S 22 Do not breathe dust.
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# 12070-12-1: 0
Canada
CAS# 12070-12-1 is listed on Canada's DSL List.
CAS# 12070-12-1 is not listed on Canada's Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 12070-12-1 is listed on the TSCA inventory.

SECTION 16 - ADDITIONAL INFORMATION
N/A

分子结构与计算化学数据

分子结构数据

1、摩尔折射率：无可用的

2、摩尔体积（cm³/mol）：无可用的

3、等张比容（90.2K）：无可用的

4、表面张力（dyne/cm）：无可用的

5、介电常数：无可用的

6、极化率（10^-24cm³）：无可用的

7、单一同位素质量：195.9509 Da

8、标称质量：196 Da

9、平均质量：195.8507 Da

计算化学数据

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: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0

7.重原子数量:2

8.表面电荷:0

9.复杂度:10

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