Document Number : SHM-DIA-DA01-3
Creation/Revision: 11 Jan. 2017

MATERIAL SAFETY DATA SHEET
1. Chemical and Manufacturer Information
1.1Product Name
Sumidia DA(Polycrystalline Sintered Diamond and Cemented Carbide )1.2 Company Information
Company Name
: Sumitomo Electric Hardmetal Corp.
Address: 1-1-1, Koya-kita, Itami, Hyogo, 664-0016 Japan
Department: Super Hard Materials Manufacturing Department
Phone No.
: +81-72-771-0535
Fax No.
: +81-72-772-5152
1.3 Chemical Family : Diamond, Metal and Caｒbide

2. Hazards Identification
2.1 Danger from Fire
Cemented carbide is non flammable when it is in a solid state, thus there is no chance to be acause of fire. However dust from grinding has the possibility of spontaneous ignition or explosion.
Flash point, flammable limits and explosion limits have not been found.
2.2

Toxicity
There is the possibility of irritation when dust from grinding contacts the skin or eyes .
It is reported that repetition or long periods in contact with of, may influence the to skin,
respiratory organs, heart, etc.

2.3

Environmental Impact
Cobalt, one of the ingredients, may be hazardous to the environment.
In particular, pay attention to its impact on aquatic organisms.

2-4. GHS classification
Not applicable
2-5. GHS label element
Not applicable1Document Number : SHM-DIA-DA01-3

3. Composition / Information on Ingredients※ Distinction of a single product or mixture : Mixture (diamond, carbide and metal)
Main ingredients and Contents
Material
Chemical
FormulaTungstencaｒbideDiamondCobalt

CAS No.

Classification No.
by PRTR
Law

WC

12070-12-1

Not applicable

Enforcement Serial
No. byIndustrial Safetyand Health Laws
Not applicableCCo7782-40-3
7440-48-4Not applicable
Class 1-No.132

Not applicable
No. 9-172 Table

Weight % ofingredients
65－90

3－15
7－20＊
＊Please contact our department when the more detailed percentage of the ingredients is required.

4. Emergency and First Aid Procedures
4.1

Inhalation
If high concentrations are inhaled or the worker exhibits trouble breathing (cough, pant, etc),
remove to fresh air. If breathing is difficult, administer oxygen.
If breathing has stopped, try artificial respiration. Seek immediate medical attention.
If irritation or a rash is continuous for a long period , seek medical attention.

4.2

Skin Contact
When grind dust contacts the skin, remove the contaminated clothes and clean the skin with soapand water. If irritation or a rash is continuous for a long period , seek medical attention.

4.3

Eye Contact
When ground dust gets in eye flush with running water. If the irritation persists , seek medicalattention.

4.4

Ingestion
When a large volume of dust is swallowed drink plenty of water to dilute and seek immediate
medical attention.

5. Fire Procedures
5.1

Fire Extinguisher
When ignition of grinding dust occurs , use dry sand, dry muscovite, ABC type (for general,oil and electricity fire) powder fire extinguisher or water.

5.2

Unusual Fire and Explosion
If dust from grinding is in a special condition, for example it has a very small particle size and ismixed with low flash point grinding oil, it might spontaneous ignite. If this dust in this conditionis then sprayed in the air it might reach the explosion point.

5.3

Fire fighter's protection
Use dust-proof mask or self contained breathing apparatus.

2Document Number : SHM-DIA-DA01-3

6. Spill and Leak Procedures
6.1

Attention to the Human Body
Clean-up personnel should wear personal protective equipment including respiratory protection

which
is appropriate for the magnitude of exposure.
6.2

Attention to the Environment
Dust must be treated as an industrial waste and must not leak to the water system.

6.3

Removal Procedures
For removal of dust from the grinding and machining operation, isolate area and do not walkthroughelse material will get scattered. Remove dust using a vacuum equipped with a filter sufficient toremove metal dust and prevent their circulation (a high efficiency particulate air (HEPA) filter isrecommended). If an appropriate vacuum is unavailable, use mist , a wet dust mop or another wet
clean-up method to remove the dust.

7. Handling and Storage
7.1

Handling
Sintered diamond and cemented carbide is stable thus there is almost no effect to the human health,but long time or repetitive contact to dust or grinding liquid which contains cobalt, may damage theskin.
When grinding or machining sintered diamond and cemented carbide cobalt contained dust may
be dispersed, use extraction to minimize the dust exposed to workers. Remove ground sludge as wellas dust.
Wash hands thoroughly before eating, drinking and smoking. Do not eat, drink and smoke in thesintered diamond handling area.
A periodic medical check-up is recommended.

7.2. Storage
Avoid drastic changes of temperature and high humidity.
Provide local exhaust ventilation system, or use respiratory protective equipment and/or dust mask
to maintain suspended dust particles concentration level, below the limits shown in the followingtable.

3Document Number : SHM-DIA-DA01-3

8. Exposure Controls and Personal Protection
Use a dust protective mask and a respirator, and set up local exhaust ventilation to prevent airborne
dust which exceeds the permissible level on the following table.
8.1

Permissible exposure limit in working environments
Ingredients
Chemical*OSHA PEL**ACGIH TLV***JSOH OLEs
33
formula
mg/m
mg/m
mg/m3
(Concentration of(Concentration of(Concentration ofmetal dust particles) metal dust particles) metal dust particles)

Tungsten CarbideWC****N/A5DiamondC
N/A
N/ACobalt
Co0.1
0.02
*OSHA: Occupational Safety and Health Administration U.S. Department

N/A
N/A0.05

PEL: Permissible Exposure Limit.
**ACGIH: American Conference of Governmental Industrial Hygienists Inc. TLV: Threshold Limit Value***JSOH: Japan Society for Occupational Health****N/A : Not Applicable
8.2

Respiratory protection
It is recommended to wear respiratory protective equipment or dust mask for protection against dust.

8.3

Hands protection
It is recommended to wear protective gloves for protection against dust.

8.4

Eye protection
It is recommended to wear protective glasses or chemical safety goggles for protection against dust.

8.5

Skin and body protection
Avoid direct contact of dust with skins.
In order to remove attached dust, do not shake off clothes or pieces of cloth, but be sure to remove

dust
by laundering or absorbing with a vacuum cleaner with suitable filters. Change contaminated clothes
to clean clothes. It is recommended to use local exhaust ventilation system.

9. Physical and Chemical Properties
Appearance/Odor
Boiling Point
Vapor Pressure (mmHg)
Vapor Density (Air=1)
Water Solubility
Specific Gravity (H2O=1)
Volatile Component
Evaporation Rate

Black and Gray / No Odor
Unknown
Unknown
Unknown
Insoluble
11 －140
Unknown4Document Number : SHM-DIA-DA01-3

10. Stability and Reactivity
10.1

Stability
This product is stable under normal use conditions.

10.2

Conditions to be avoided
Oxidizing substances (Hydrogen peroxide, Nitric acid, Ammonium nitrate, Nitrogen dioxide, etc.)
Others ( Hydrazine nitrate, Acetylene, etc.)

10.3

Hazardous and harmful decomposition productsNone

11. Toxicological Information11.1 Acute Toxicity
Data of Products: No data available
11.2 Skin Corrosion / Irritation
Data of Products: No data available
11.3 Serious Eye Damage / Irritation
Data of Products: No data available
11.4 Respiratory or Skin Sensitization
Data of Products: No data available
11.5 Germ Cell Mutagenicity
Data of Products: No data available
11.6 Carcinogenicity
Data of Products: No data available
11.7 Reproductive Toxicity
Data of Products: No data available
11.8 Specific Target Organ / Systemic Toxicity ( Single Exposure )Data of Products: No data available
11.9 Specific Target Organ / Systemic Toxicity ( Repeated Exposure )Data of Products: No data available
11.10 Aspiration Hazard
Data of Products: No data available
myocardium infarction.(Literature number 2)5Document Number : SHM-DIA-DA01-3

12. Ecological Information
12.1

Mobility
It moves in dust form, however it has high specific gravity then it has tendency to be piled up.

12.2

Persistence / Degradability
There has been no evidence of persistence for sintered diamond.

12.3

Bioaccumulation
There has been no evidence of bioaccumulation for sintered diamond.

12.4

Environmental impacts / Ecotoxicity
There has been no evidence of ecotoxicity for sintered diamond.
Cobalt may be harmful to the environment. Precaution is especially required to the environmental
impact of aquatic organism. (Literature number 2)

13. Disposal Consideration
Method for safe and environmental preferred disposal：
The main materials, such as tungsten and cobalt, are rare metals, and should be collectedand recycled.
In the case of disposal, it must be handled, based on Waste Disposal and Public Cleaning Law.
(Domestic Law)

14. Transport Information
No data available on code and classifications according to international regulations for transport,
regarding the description of this MSDS.
There are no restrictions concerning domestic or oversea transportation. In case of transportation,
the products are sure to be loaded so that the containers will not fall, break or corrode.
Take care of handling because sharp edges might cause external injuries.

15. Regulatory Information (Japanese Applicable Law)
PRTR Law[Cobalt are Class 1-designated chemical substances. Preparation of MSDS is obligatory.:
Ministry of Economy, Trade ＆ Industry, Ministry of Environment]
Occupational Safety ＆ Health Administration Law.
[Preparation of MSDS is obligatory.: Ministry of Health, Labor ＆ Welfare]6Document Number : SHM-DIA-DA01-3

16. Other Information
16.1 Other hazard and toxicity information
When grinding this product, regarding dust or fumes to generate, the following cautions are required.
・Dust or fumes from grinding this product can cause irritation of the nose, mouth, throat, eye mucosa,
upper respiratory tract and lungs when inhaled.
Symptoms of overexposure include allergic dermatitis, productive cough, wheezing, shortness of breath,and chest tightness, etc.
・Ingestion of the dust containing high levels of cobalt may cause damage of the blood, heart, thyroid
gland and spleen. (References: 1)
・Recent studies indicate that the repeated inhalation or long term contact of cobalt metal may affect the skin,
respiratory organs, heart, etc. ( References: from 2 to 5 )Although there is no carcinogenic knowledge about cemented carbide, there is the following knowledge
about a raw powder, and composition metal component.
・Cobalt metal with tungsten carbide:
IARC

Group 2A : probably carcinogenic to humans (Reference 6 )・Metallic Cobalt
ACGIHIARC
JSOH

Group A3 : carcinogenic in animals, but the relevance to humans is unknown
Group 2A : possibly carcinogenic to humans
Group 2B : possibly carcinogenic to humans( the substance whose evidence is not comparatively enough )*ACGIH: American Conference of Governmental Industrial Hygienists Inc.
*IARC: International Agency for Research on Cancer*JSOH: Japan Society for Occupational Health
Although there is no knowledge of environmental impact about a cemented carbide, there is thefollowing knowledge about composition metal component.
Cobalt may be potentially hazardous to the environment. Particular attention is required regarding
the effect to the aquatic organism.
16.2 Notes on the following descriptions
The details in this MSDS have been based on our best investigation and evidences.
The information may be revised according to new evidences, test etc., however, the accuracy andsafety of the information are not a guaranteed value.
All chemical agents may contain unknown harmful substances: therefore, the companies and7

Document Number : SHM-DIA-DA01-3
operators, using this MSDS, are requested to take appropriate actions according to theirown conditions on their own responsibility.
* Homepage of Ministry of Economy, Trade ＆ Industry ： http://www.meti.go.jp/* Homepage of Ministry of Environment ：http://www.env.go.jp/* Homepage of Ministry of Health, Labor ＆ Welfare ：http://www.mhlw.go.jp/* IARC（International Agency for Research on Cancer）： http://monographs.iarc.fr/* Supplier of ICSC Cards ：http://www.nihs.go.jp/ICSC/* National Institute of Technology and Evaluation ：http://www.safe.nite.go.jp/ghs/list.html

16.3 Literature reference1) Food & Drug Research Laboratories, Study No.8005B (4.11.84).
2) T. Shirakawa et al., Chest.95.29 (1989).
3) International Chemical Safety Cards (cobalt).
4) Danger and hazardous property handbook of a chemical substance (Japan Industrial Safety & Health
Association).
5) A.O.Bech et al., Brit.J.Ind.,19,239 (1962).
6) IARC Monographs on the Evaluation of Calcinogenic Risks to Humans, vol.86 (2006).

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