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Cesium, standard solution 1000mg/L,
JUNSEI CHEMICAL CO., LTD.,15421jis_J_E1-1,29/Nov/2023
Date of issue for the 1st edition : 29/Nov/2023

Safety Data Sheet

Section 1. Identification of the substance/mixture and of the company/undertaking
Product identifier:Product name: Cesium, standard solution 1000mg/L
Reference number(SDS):15421jis_J_E1-1
Product type：
Reagent
Relevant identified uses of the substance or mixture and uses advised against
Relevant identified uses of the product: Atomic absorption spectrometry
Uses advised against: Do not use for other purposes.
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

Section 2. Hazards identification
GHS classification and label elements of the product
Classification of the substance or mixture
PHYSICAL AND CHEMICAL HAZARDSCorrosive to metals: Category 1
HEALTH HAZARDS
Acute toxicity (Inhalation): Category 3
Skin corrosion/irritation: Category 1
Serious eye damage/eye irritation: Category 1
Specific target organ toxicity - single exposure: Category 2 (respiratory organs)
Specific target organ toxicity - repeated exposure: Category 2 (respiratory organs, teeth)(Note) GHS classification without description: Not classified/Classification not possible
Label elements

Signal word: Danger
HAZARD STATEMENT
H290-May be corrosive to metals
H331-Toxic if inhaledH314-Causes severe skin burns and eye damage
H318-Causes serious eye damage
H371-May cause damage to organs
H373-May cause damage to organs through prolonged or repeated exposure
PRECAUTIONARY STATEMENT
Prevention
Keep only in original packaging.
Do not breathe vapors.
Use only outdoors or in a well-ventilated area.
Wash contaminated parts thoroughly after handling.

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Cesium, standard solution 1000mg/L,
JUNSEI CHEMICAL CO., LTD.,15421jis_J_E1-1,29/Nov/2023
Wear protective gloves, protective clothing or face protection.
Wear eye protection/face protection.
Do not eat, drink or smoke when using this product.
Response
Absorb spillage to prevent material-damage.
Get medical advice/attention if you feel unwell.
Immediately call a POISON CENTER/doctor/physician.
Call a POISON CENTER/doctor/physician.
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 (or hair): Take off immediately all contaminated clothing. Rinse skin with water or shower.
Wash contaminated clothing before reuse.
IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if
present and easy to do. Continue rinsing.
IF SWALLOWED: Rinse mouth. Do NOT induce vomiting.
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.

Section 3. Composition/information on ingredients
Mixture/Substance selection:
MixtureIngredient name:Yttrium oxide
Content (%):0.1
Chemical formula:O3Y2
Chemicals No, Japan:1-560
CAS No.:1314-36-9
MW:362.50
ECNO:215-233-5
Ingredient name:Nitric acidContent (%):5 ～ 10
Chemical formula:HNO3
Chemicals No, Japan:1-394
CAS No.:7697-37-2
MW:63.01
ECNO:231-714-2
Ingredient name:Water
Content (%):Residual quantity of the ingredient mentioned above.
Chemical formula:H2O
CAS No.:7732-18-5
MW:18.02
ECNO:231-791-2
Note : The figures shown above are not the specifications of the product.

Section 4. First-aid measures
Descriptions of first-aid measures
General measures
Get medical advice/attention if you feel unwell.

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Cesium, standard solution 1000mg/L,
JUNSEI CHEMICAL CO., LTD.,15421jis_J_E1-1,29/Nov/2023
Immediately call a POISON CENTER/doctor/physician.
Keep victim warm and quiet.
Call emergency medical service.
Effects of exposure (inhalation, ingestion or skin contact) to substance may be delayed.
Do not use mouth-to-mouth method if victim ingested or inhaled the substance; give
artificial respiration with the aid of a pocket mask equipped with a one-way valve or otherproper respiratory medical device.
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.
If skin irritation or rash occurs: Get medical advice/attention.
For minor skin contact, avoid spreading material on unaffected skin.
Remove and isolate contaminated clothing and shoes.
IF IN EYES
Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy
to do. Continue rinsing.
If eye irritation persists: Get medical advice/attention.
IF SWALLOWED
Rinse mouth. Do NOT induce vomiting.
Call a POISON CENTER/doctor/physician if you feel unwell.
Most important symptoms and effects, both acute and delayedSpecific information on symptom and effect are unknown.
Indication of any immediate medical attention and special treatment needed
Ensure that medical personnel are aware of the material(s) involved, and take precautions
to protect themselves.

Section 5. Fire-fighting measures
Extinguishing media
Suitable extinguishing media
Use appropriate extinguishing media suitable for surrounding facilities.
The product is non-flammable.
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 a full facepiece operated
in the positive pressure mode.

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Cesium, standard solution 1000mg/L,
JUNSEI CHEMICAL CO., LTD.,15421jis_J_E1-1,29/Nov/2023
Section 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.
PUBLIC SAFTY: Ventilate closed spaces before entering.
Do not touch damaged containers or spilled material unless wearing appropriate protective clothing.
EVACUATION : Spill: See the Table of Initial Isolation and Protective Action Distances forhighlighted substances. For non-highlighted substances, increase, in the downwind
direction, as necessary, the isolation distance shown under “PUBLIC SAFETY”.
Environmental precautions
Avoid release to headsprings, rivers, lakes, ocean and groundwater.
Methods and materials for containment and cleaning up
Absorb or cover with dry earth, sand or other non-combustible material and transfer to containers.
Use clean non-sparking tools to collect absorbed material.
All equipment used when handling the product must be grounded.
Preventive measures for secondary accident
Absorb spillage to prevent material-damage.
Collect spillage.
Stop leak if you can do it without risk.
ELIMINATE all ignition sources (no smoking, flares, sparks or flames in immediate area).
Prevent entry into waterways, sewers, basements or confined areas.
Keep out of low areas.

Section 7. Handling and storage
Precautions for safe handling
Preventive measures(Exposure Control for handling personnel)
Do not breathe vapors.
(Protective measures against fire and explosion)
Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No
smoking.
(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.
Use personal protective equipment as required.
When using do not eat, drink or smoke.
Any incompatibilities
Bases, Metals 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.
Wash contaminated clothing before reuse.

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Cesium, standard solution 1000mg/L,
JUNSEI CHEMICAL CO., LTD.,15421jis_J_E1-1,29/Nov/2023
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.
(Incompatible storage condition)
The product may corrode metal. Do not keep in a metal container.
Container and packaging materials for safe handling
Keep only in original packaging.
Store in a corrosion resistant/specified container with a resistant inner liner.
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.

Section 8. Exposure controls/personal protection
Control parameters
Control value in MHLW is not available.
Adopted value(Nitric acid)
JSOH(1982) 2ppm; 5.2mg/m3
ACGIH(1997) TWA: (2ppm);
STEL: (4ppm) (URT & eye irr; dental erosion)(Yttrium oxide)
Adopted value in JSOH is not available.
ACGIH(1988) TWA: 1mg-Y/m3 (Pulm fibrosis)
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.
Recommended respiratory protection：Gas mask(e.g. JIS T8152)
Hand protection
Wear protective gloves.
Inspect before use and replace worn or damaged gloves.
Contact the glove manufacturer for specific advice on glove selection and breakthroughtimes for your use conditions.
Chemical-resistant, impervious gloves complying with an approved standard (e.g. JIS T8116)
should be used.
Eye protection
Wear chemical safety goggle.
Wear eye/face protection.
Skin and body protection
Wear impervious clothing and boots in case of repeated or prolonged treatment.
Personal protective equipment for the body and skin should be selected based on the task
being performed and the risks involved.

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Cesium, standard solution 1000mg/L,
JUNSEI CHEMICAL CO., LTD.,15421jis_J_E1-1,29/Nov/2023
Section 9. Physical and Chemical Properties
Information on basic physical and chemical properties
Physical state: Liquid
Color: Colorless-clear
Odor data is not available.
Odor threshold data is not available.
Melting point/Freezing point data is not available.
Boiling point or initial boiling point data is not available.
Boiling range data is not available.
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 data is not available.
Self-Accelerating Decomposition Temperature/SADT data is not available.
pH: Strong acid
Dynamic viscosity data is not available.
Kinematic viscosity data is not available.
Solubility:
Solubility in water: Miscible
Solubility in solvent data is not available.
n-Octanol/water partition coefficient data is not available.
Vapor pressure data is not available.
Vapor density data is not available.
Density and/or relative density data is not available.
Relative vapor density (Air=1) data is not available.
Relative density of the Vapor/air - mixture at 20℃ (Air = 1) data is not available.
Particle characteristics data is not available.
Other information
Critical temperature data is not available.
Evaporation rate data is not available.
VOC data is not available.

Section 10. Stability and Reactivity
Reactivity
Reactivity data is not available.
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.
Heating
Incompatible materials
Bases, Metals
Hazardous decomposition products
Nitrogen oxides, Metal oxides

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Cesium, standard solution 1000mg/L,
JUNSEI CHEMICAL CO., LTD.,15421jis_J_E1-1,29/Nov/2023
Section 11. Toxicological Information
The product has not been subjected to toxicological testing. Refer to the available data on
the constituents.
Information on toxicological effects
Acute toxicity
Acute toxicity (Oral)[Product]Classification not possible (Insufficient data available or no data available).
[Data for components of the product]
No data available.
Acute toxicity (Dermal)[Product]Classification not possible (Insufficient data available or no data available).
[Data for components of the product]
No data available.
Acute toxicity (Inhalation)[Product]Category 3, Toxic if inhaled[Data for components of the product][GHS Cat. Japan, base data](Nitric acid)vapor: rat LC50=49ppm/4hr (JSOH, 1982)
Irritant properties
Skin corrosion/irritation[Product]Category 1, Causes severe skin burns and eye damage[Data for components of the product][GHS Cat. Japan, base data](Nitric acid)human : severe damage (ACGIH 7th, 2001)
Serious eye damage/irritation[Product]Category 1, Causes serious eye damage[Data for components of the product][GHS Cat. Japan, base data](Yttrium oxide)
rabbit : slight irritation (HSDB, Access on September 2015)(Nitric acid)human : non recoverable corneal opacity to blindness (ACGIH 7th, 2001)
Sensitization
Respiratory sensitization[Product]Classification not possible (Insufficient data available or no data available).
[Data for components of the product]
No data available.
Skin sensitization[Product]Classification not possible (Insufficient data available or no data available).
[Data for components of the product]
No data available.
Germ cell mutagenicity[Product]Classification not possible (Insufficient data available or no data available).

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Cesium, standard solution 1000mg/L,
JUNSEI CHEMICAL CO., LTD.,15421jis_J_E1-1,29/Nov/2023[Data for components of the product]
No data available.
Carcinogenicity[Product]Classification not possible (Insufficient data available or no data available).
[Data for components of the product]
No data available.
Reproductive toxicity[Product]Classification not possible (Insufficient data available or no data available).
[Data for components of the product]
No data available.
Specific target organ toxicity (STOT)
STOT-single exposure[Product]Category 2, May cause damage to organs[Data for components of the product][cat.1][GHS Cat. Japan, base data](Nitric acid)respiratory system (SIDS, 2010)
STOT-repeated exposure[Product]Category 2, May cause damage to organs through prolonged or repeated exposure[Data for components of the product][cat.1][GHS Cat. Japan, base data](Nitric acid)teeth, respiratory system (SIDS, 2010)
Aspiration hazard[Product]Classification not possible (Insufficient data available or no data available).
[Data for components of the product]
No data available.

Section 12. Ecological Information
The product has not been subjected to ecotoxicological testing. Refer to the available dataon the constituents.
Toxicity
Aquatic toxicity[Product]
Based on available data, the classification criteria are not met.
[Data for components of the product]
Hazardous to the aquatic environment, short-term (acute)[GHS Cat. Japan, base data](Nitric acid)
Fish (Gambusia affinis) LC50=72mg/L/96hr (SIDS, 2010)
Water solubility[Data for components of the product](Nitric acid)miscible (ICSC, 2006)
Persistence and degradability
Persistence and degradability data is not available.

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Cesium, standard solution 1000mg/L,
JUNSEI CHEMICAL CO., LTD.,15421jis_J_E1-1,29/Nov/2023
Bioaccumulative potential[Data for components of the product](Nitric acid)log Pow=-0.21 (ICSC, 2006)
Mobility in soil
Mobility in soil data is not available.
Other adverse effects
Ozone depleting chemical data is not available.

Section 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
Dispose of contents/container in accordance with local/national regulation.

Section 14. Transport Information
UN No., UN CLASS
UN Number or ID Number : 2031
UN Proper Shipping Name : NITRIC ACID, other than red fuming, with 20% or less nitric acid
Class or division (Transport hazard class) : 8
Packing group : II
ERG GUIDE No.: 157
IMDG Code (International Maritime Dangerous Goods Regulations)
UN Number or ID Number : 2031
UN Proper Shipping Name : NITRIC ACID, other than red fuming, with 20% or less nitric acid
Class or division (Transport hazard class) : 8
Packing group : II
IATA (Dangerous Goods Regulations)
UN Number or ID Number : 2031
UN Proper Shipping Name : NITRIC ACID, other than red fuming, with 20% or less nitric acid
Class or division (Transport hazard class) : 8
Hazard labels : Corrosive
Packing group : II
Environmental hazards
Marine pollutants (yes/no) : noTransport in bulk according to Annex II of MARPOL 73/78 and the IBC Code
Noxious Liquid Substances ; Cat. Y
Nitric acid
Non Noxious Liquid Substances ; Cat. OS
Water
MARPOL Annex V - HME (Harmful to the Marine Environment)
Specific target organ toxicity - repeated exposure: cat.1
Nitric acid

Section 15. Regulatory Information
Safety, health and environmental regulations/legislation specific for the substance or mixture
Labor Standards Act, Japan
Chemical substances or compounds (including alloys) causing disease (Regulation, Appended Table1-2-4-1)
Nitric acid

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Cesium, standard solution 1000mg/L,
JUNSEI CHEMICAL CO., LTD.,15421jis_J_E1-1,29/Nov/2023
U.S. Toxic Substances Control Act (TSCA) Inventory
Chemicals listed in TSCA Inventory1314-36-9; 7732-18-5; 7697-37-2
All components are listed or exempted.
Superfund Amendments and Reauthorizations Act (SARA), Title III
SARA 313 (TRI)
Nitric acid
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 local
regulations.
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.

Section 16. Other information
GHS classification and labelling
H290-Corrosive to metals, Category 1: H290 May be corrosive to metals
H331-Acute toxicity, Category 3: H331 Toxic if inhaledH314-Skin corrosion/irritation, Category 1: H314 Causes severe skin burns and eye damage
H318-Serious eye damage/eye irritation, Category 1: H318 Causes serious eye damage
H371-STOT - single exposure, Category 2: H371 May cause damage to organs
H373-STOT - Repeated exposure, Category 2: H373 May cause damage to organs throughprolonged or repeated exposure
References and sources for data
Globally Harmonized System of classification and labelling of chemicals, UN
Recommendations on the TRANSPORT OF DANGEROUS GOODS 22nd edit., 2021 UN
IMDG Code, 2020 Edition (Incorporating Amendment 40-20)
IATA Dangerous Goods Regulations (64th Edition) 2023
2020 EMERGENCY RESPONSE GUIDEBOOK (US DOT)
2023 TLVs and BEIs. (ACGIH)
JIS Z 7252 : 2019
JIS Z 7253 : 20192022 Recommendation on TLVs (JSOH)
Notification No. 0111-1 (January 11, 2022), Chemical Hazards Control Division, Industrial
Safety and Health Department, Labour Standards Bureau, MHLW in Japan
Supplier's data/information
Chemicals safety data management system "GHS Assistant" Version 4.25 (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)
Abbreviations and acronyms
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)

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Cesium, standard solution 1000mg/L,
JUNSEI CHEMICAL CO., LTD.,15421jis_J_E1-1,29/Nov/2023
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 this
Safety 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 2022).