1/8
Copper(II) oxide, granular 14～24mesh,
JUNSEI CHEMICAL CO., LTD.,32266jis_E-1,2021/07/29
Date of issue for the 1st edition : 2021/07/29

Safety Data Sheet

1. Identification of the substance/mixture and of the company/undertaking
Product identifier:Product name: Copper(II) oxide, granular 14～24mesh
Reference number(SDS):32266jis_E-1
Product type：
Reagent
Details of the supplier of the safety data sheet
Manufacturer/Supplier: JUNSEI CHEMICAL CO., LTD.
Address: 1-6, Ohmano-cho, Koshigaya-shi, Saitama 343-0844, Japan
Division: Quality Assurance Department
Telephone number: +81-48-986-6161
FAX: +81-48-989-2787
e-mail address: shiyaku-t@junsei.co.jp

2. Hazards identification
GHS classification and label elements of the product
Classification of the substance or mixture
HEALTH HAZARDSSkin sensitization: Category 1ASpecific target organ toxicity - single exposure: Category 1(systemic toxicity)
Specific target organ toxicity - single exposure: Category 3 (Respiratory tract irritation)
ENVIRONMENT HAZARDS
Hazardous to the aquatic environment (Acute): Category 1
Hazardous to the aquatic environment (Long-term): Category 1
Label elements

Signal word: Danger
HAZARD STATEMENT
H317-May cause an allergic skin reaction
H370-Causes damage to organs
H335-May cause respiratory irritation
H410-Very toxic to aquatic life with long lasting effects
PRECAUTIONARY STATEMENT
Prevention
Avoid release to the environment.
Do not breathe dust/fume/gas/mist/vapors/spray.
Use only outdoors or in a well-ventilated area.
Wash contaminated parts thoroughly after handling.
Wear protective gloves.
Contaminated work clothing should not be allowed out of the workplace.
Do not eat, drink or smoke when using this product.
Response
Collect spillage.
Call a POISON CENTER/doctor/physician if you feel unwell.

2/8Copper(II) oxide, granular 14～24mesh,JUNSEI CHEMICAL CO., LTD.,32266jis_E-1,2021/07/29
IF exposed or concerned: Call a POISON CENTER/doctor/physician.
IF INHALED: Remove person to fresh air and keep comfortable for breathing.
IF ON SKIN: Wash with plenty of soap and water.
If skin irritation or rash occurs: Get medical advice/attention.
Take off contaminated clothing and wash it before reuse.
Storage
Store in a well-ventilated place. Keep container tightly closed.
Store locked up.
Disposal
Dispose of contents/container in accordance with local/national regulation.

3. Composition/information on ingredients
Mixture/Substance selection:SubstanceCommon name, synonyms: Cupric oxide
Ingredient name:Copper(II) oxide
Content (%):98.0 <Chemical formula:CuO
Chemicals No, Japan:1-297
CAS No.:1317-38-0
MW:79.54
ECNO:215-269-1

4. First-aid measures
Descriptions of first-aid measures
General measures
Call a POISON CENTER/doctor/physician if you feel unwell.
Call emergency medical service.
IF INHALED
Remove person to fresh air and keep comfortable for breathing.
Give artificial respiration if victim is not breathing.
Administer oxygen if breathing is difficult.
Call a POISON CENTER/doctor/physician if you feel unwell.
IF ON SKIN (or hair）
Take off immediately all contaminated clothing. Rinse skin with water or shower.
Wash with plenty of soap and water.
If skin irritation or rash occurs: Get medical advice/attention.
IF IN EYES
Rinse cautiously with water for several minutes. Remove contact lenses, if present and easyto do. Continue rinsing.
If eye irritation persists: Get medical advice/attention.
IF SWALLOWED
Rinse mouth.
Call a POISON CENTER/doctor/physician if you feel unwell.

5. Fire-fighting measures
Extinguishing media
Suitable extinguishing media
Use appropriate extinguishing media suitable for surrounding facilities.
The product is non-flammable.

3/8
Copper(II) oxide, granular 14～24mesh,
JUNSEI CHEMICAL CO., LTD.,32266jis_E-1,2021/07/29
Unsuitable extinguishing media
Unsuitable extinguishing media data is not available.
Specific hazards arising from the substance or mixture
Containers may explode when heated.
Fire may produce irritating, corrosive and/or toxic gases.
Runoff from fire control or dilution water may cause pollution.
Advice for firefighters
Specific fire-fighting measures
Evacuate non-essential personnel to safe area.
Special protective equipment and precautions for fire-fighters
Wear fire resistant or flame retardant clothing.
Wear protective gloves/protective clothing/eye protection/face protection.
Firefighters should wear self-contained breathing apparatus with full face peace operated
positive pressure mode.

6. Accidental release measures
Personnel precautions, protective equipment and emergency procedures
Keep unauthorized personnel away.
In case of contact with substance, immediately flush skin or eyes with running water for atleast 20 minutes.
Ventilate area until material pick up is complete.
Wear proper protective equipment.
Do not touch or walk through spilled material.
Environmental precautions
Avoid release to headsprings, rivers, lakes, ocean and groundwater.
Methods and materials for containment and cleaning up
Sweep up, place in a bag and hold for waste disposal.
Preventive measures for secondary accident
Collect spillage.
Stop leak if you can do it without risk.
Prevent dust cloud.

7. Handling and storagePrecautions for safe handling
Preventive measures(Exposure Control for handling personnel)
Do not breathe dust/fume/gas/mist/vapors/spray.
Avoid breathing dust/fume/gas/mist/vapors/spray.
(Protective measures against fire and explosion)
Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. Nosmoking.
(Exhaust/ventilator)
Exhaust/ventilator should be available.
(Safety treatments)
Avoid contact with skin.
Avoid contact with eyes.
Safety Measures
Use only outdoors or in a well-ventilated area.
Wear protective gloves/protective clothing/eye protection/face protection.
Wear protective gloves.
Use personal protective equipment as required.
When using do not eat, drink or smoke.

4/8Copper(II) oxide, granular 14～24mesh,
JUNSEI CHEMICAL CO., LTD.,32266jis_E-1,2021/07/29
Any incompatibilities
Strong acids, Strong bases, Strong oxidizing agents, Hydrazine, Titanium, Sodium should not
be mixed with the chemicals.
Advice on general occupational hygiene
Wash contaminated parts thoroughly after handling.
Do not eat, drink or smoke when using this product.
Contaminated work clothing should not be allowed out of the workplace.
Take off contaminated clothing and wash it before reuse.
Storage
Conditions for safe storage
Store in a well-ventilated place. Keep container tightly closed.
Keep cool. Protect from sunlight.
Store in accordance with local/national regulation.
Store locked up.
Container and packaging materials for safe handling data is not available.
Specific end use(s)See information in Section 7.1 and 7.2 for handling and storage recommendations. See
Section 8 for exposure controls and personal protection recommendations.

8. Exposure controls/personal protection
Control parameters
Control value in MHLW is not available.
Adopted value
Adopted value in JSOH is not available.
Adopted value in ACGIH is not available.
Exposure controls
Appropriate engineering controls
Do not use in areas without adequate ventilation.
Eye wash station should be available.
Washing facilities should be available.
Individual protection measures
Respiratory protection
Wear respiratory protection.
Hand protection
Wear protective gloves.
Consult with your glove and/or personnel equipment manufacturer for selection of
appropriate compatible materials.
Eye protection
Wear safety glasses with side-shields.
Wear eye/face protection.
Skin and body protection
Wear impervious clothing and boots in case of repeated or prolonged treatment.

9. Physical and Chemical Properties
Information on basic physical and chemical properties
Physical state: Granular
Color: Black
Odor: None
Odor threshold data is not available.
Melting point/Freezing point: 1326℃
Boiling point or initial boiling point: 1026℃
Boiling range data is not available.

5/8
Copper(II) oxide, granular 14～24mesh,
JUNSEI CHEMICAL CO., LTD.,32266jis_E-1,2021/07/29
Flammability (gases, liquids and solids): Non-flammable
Lower and upper explosion limit/flammability limit data is not available.
Flash point: Non-flammableAuto-ignition temperature data is not available.
Decomposition temperature: 1026℃
Self-Accelerating Decomposition Temperature/SADT data is not available.
pH data is not available.
Dynamic viscosity data is not available.
Kinematic viscosity data is not available.
Solubility:Solubility in water: Insoluble(Soluble in acids.)
Solubility in solvent: Insoluble in ethamol.
n-Octanol/water partition coefficient data is not available.
Vapor pressure data is not available.
Vapor density data is not available.
VOC data is not available.
Evaporation rate data is not available.
Density and/or relative density: 6.315(14/4℃)
Relative vapor density (Air=1) data is not available.
Relative density of the Vapor/air - mixture at 20℃ (Air = 1) data is not available.
Critical temperature data is not available.
Particle characteristics: Particle size (14～24 mesh)：>=60%

10. Stability and Reactivity
Reactivity
Runaway polymerization will not occur.
Chemical stability
Stable under normal storage/handling conditions.
Possibility of hazardous reactions
Possibility of hazardous reactions data is not available.
Conditions to avoid
Contact with incompatible materials.
Heat.
Incompatible materials
Strong acids, Strong bases, Strong oxidizing agents, Hydrazine, Titanium, Sodium.
Hazardous decomposition products
Copper oxides

11. Toxicological Information
Information on toxicological effects
Acute toxicity
Acute toxicity (Oral)[GHS Cat. Japan, base data]
rat LD50>2000mg/kg (SIAP, 2014)
Acute toxicity (Dermal)[GHS Cat. Japan, base data]
rat LD50>2000mg/kg (SIAP, 2014)
Irritant properties
Skin corrosion/irritation data is not available.
Serious eye damage/irritation data is not available.

6/8
Copper(II) oxide, granular 14～24mesh,
JUNSEI CHEMICAL CO., LTD.,32266jis_E-1,2021/07/29
Sensitization
Skin sensitization[GHS Cat. Japan, base data]
cat. 1A; JSOH, 2016
Mutagenic effects data is not available.
Carcinogenic effects data is not available.
Reproductive toxicity data is not available.
STOT
STOT-single exposure[cat.1][GHS Cat. Japan, base data]systemic toxicity (DFGOT vol. 22, 2004 et al.)[cat.3 (resp. irrit.)][GHS Cat. Japan, base data]
respiratory tract irritation (DFGOT vol. 22, 2004)
STOT-repeated exposure data is not available.
Aspiration hazard data is not available.

12. Ecological Information
Ecotoxicity
Aquatic toxicity
H410-Very toxic to aquatic life with long lasting effects
Hazardous to the aquatic environment (Acute)[GHS Cat. Japan, base data]
Algae (Pseudokirchneriella subcapitata) LC50=3.1 ppb (unknown time) (US EPA: RED, 2009)
Hazardous to the aquatic environment (Long-term)[GHS Cat. Japan, base data]
Algae (Pseudokirchneriella subcapitata) NOEC=0.2 ppb (unknown time) (US EPA: RED, 2009)
Persistence and degradability
Persistence and degradability data is not available.
Bioaccumulative potential
Bioaccumulative potential data is not available.
Mobility in soil
Mobility in soil data is not available.
Other adverse effects
Ozone depleting chemical data is not available.

13. Disposal considerations
Description of waste residues and information on their safe handling and methods of disposal,
including the disposal of any contaminated packaging
Waste treatment methods
Avoid release to the environment.
Dispose of contents/container in accordance with local/national regulation.

14. Transport InformationUN No., UN CLASSUN No. or ID No.: 3077
UN Proper Shipping Name : ENVIRONMENTALLY HAZARDOUS SUBSTANCE, SOLID, N.O.S.
Class or division (Transport hazard class) : 9Packing group : III
ERG GUIDE No.: 1717/8
Copper(II) oxide, granular 14～24mesh,
JUNSEI CHEMICAL CO., LTD.,32266jis_E-1,2021/07/29
IMDG Code (International Maritime Dangerous Goods Regulations)
UN No.: 3077
Proper Shipping Name : ENVIRONMENTALLY HAZARDOUS SUBSTANCE, SOLID, N.O.S.
Class or division : 9Packing group : III
IATA Dangerous Goods Regulations
UN No.: 3077
Proper Shipping Name : ENVIRONMENTALLY HAZARDOUS SUBSTANCE, SOLID, N.O.S.
Class or division : 9Hazard labels : Miscellaneous & Environmentally hazardousPacking group : III
Environmental hazards
MARPOL Annex III - Prevention of pollution by harmful substances
Marine pollutants (yes/no) : yes
MARPOL Annex V - Prevention of pollution by garbage discharge
Hazardous to the aquatic environment - acute hazard: cat.1
Copper(II) oxide
Hazardous to the aquatic environment - long-term hazard: cat.1, 2Copper(II) oxide
Maritime transport in bulk according to IMO instruments
Not applicable to Maritime transport in bulk according to IMO instruments

15. Regulatory Information
Safety, health and environmental regulations/legislation specific for the substance or mixture
Chemicals listed in TSCA Inventory
Copper(II) oxide
Other regulatory information
We are not able to check up the regulatory information with regard to the substances inyour country or region, therefore, we request this matter would be filled by yourresponsibility.
Regulatory information with regard to this substance in your country or in your region
should be examined by your own responsibility.
Ensure this material in compliance with federal requirements and ensure conformity to localregulations.
Regulatory information in this section are limited to intentional ingredient(s), but does
not contain information on non-intentional ingredients or impurities which are not informedby supplier(s).
Chemical safety assessment
Advice on safe handling for this product can be found in sections 7 and 8 of this SDS.

16. Other information
GHS classification and labellingH317-Skin Sens. 1A: H317 May cause an allergic skin reaction
H370-STOT SE 1: H370 Causes damage to organs
H335-STOT SE 3: H335 May cause respiratory irritation
H410-Aquatic Chronic 1: H410 Very toxic to aquatic life with long lasting effects
Reference Book
Globally Harmonized System of classification and labelling of chemicals, UN
Recommendations on the TRANSPORT OF DANGEROUS GOODS 21th edit., 2019 UN
IMDG Code, 2018 Edition (Incorporating Amendment 39-18)
IATA Dangerous Goods Regulations (62nd Edition) 2021

8/8
Copper(II) oxide, granular 14～24mesh,
JUNSEI CHEMICAL CO., LTD.,32266jis_E-1,2021/07/29
2020 EMERGENCY RESPONSE GUIDEBOOK (US DOT)
2021 TLVs and BEIs. (ACGIH)
JIS Z 7252 : 2019
JIS Z 7253 : 20192020 Recommendation on TLVs (JSOH)
Supplier's data/information
Chemicals safety data management system "GHS Assistant" Version 4.11 (https://www.asahi-ghs.com/)
NITE Chemical Risk Information Platform "NITE-CHRIP"(https://www.nite.go.jp/en/chem/chrip/chrip_search/systemTop)
GHS Classification Guidance for Enterprises 2019 Revised Edition (Ver. 2.0) （Mar. 2020, METI)
Definitions and Abbreviations
SDS (Safety Data Sheet)
LD50 (Lethal Dose, 50％)
LC50 (Lethal Concentration, 50％)
IARC (International Agency for Research on Cancer)
ACGIH (American Conference of Governmental Industrial Hygienists)EPA (US Environmental Protection Agency)
NTP (US National Toxicology Program)
JSOH (Japan Society for Occupational Health)EU (European Union)
EC50 (Effective Concentration, 50％)
NOEC (No Observed Effect Concentration)
BOD (Biochemical Oxygen Demand)
COD (Chemical Oxygen Demand)
BCF (Bioconcentration Factor)anh (anhydride)
General Disclaimer
This data sheet was created based on the information we currently have and may be revised
according to new information. In addition, the precautions apply only to normal handling,
and in the case of special handling, please make adequate countermeasure to maintain yoursafety.
The data given here is based on current knowledge and experience. The purpose of thisSafety Data Sheet is to describe the products in terms of their safety requirements. The
data does not signify any warranty with regard to the products' properties.
The GHS classification data given here is based on current Japan official data (NITE
published in 2019).