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1mol/L Sodium hydroxide solution,JUNSEI CHEMICAL CO., LTD.,95557jis_E2-3,27/May/2022
Date of issue for the 1st edition : 06/Jun/2018
Date of revision : 27/May/2022

Safety Data Sheet

1. Identification of the substance/mixture and of the company/undertaking
Product identifier:Product name: 1mol/L Sodium hydroxide solution
Reference number(SDS):95557jis_E2-3
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 corrosion/irritation: Category 1
Serious eye damage/eye irritation: Category 1
Specific target organ toxicity - single exposure: Category 2(respiratory system)(Note) GHS classification without description: Not classified/Classification not possible
Label elements

Signal word: Danger
HAZARD STATEMENT
H314-Causes severe skin burns and eye damage
H318-Causes serious eye damage
H371-May cause damage to organs
PRECAUTIONARY STATEMENT
Prevention
Do not breathe dust/fume/gas/mist/vapors/spray.
Wash contaminated parts thoroughly after handling.
Wear protective gloves, protective clothing or face protection.
Wear eye protection/face protection.
Do not eat, drink or smoke when using this product.
Response
Immediately 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.

2/81mol/L Sodium hydroxide solution,
JUNSEI CHEMICAL CO., LTD.,95557jis_E2-3,27/May/2022
Storage
Store locked up.
Disposal
Dispose of contents/container in accordance with local/national regulation.

3. Composition/information on ingredients
Mixture/Substance selection:
MixtureIngredient name:Sodium hydroxide
Content (%):4(w/v)
Chemical formula:HNaO
Chemicals No, Japan:1-410
CAS No.:1310-73-2
MW:40.00
ECNO:215-185-5
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.

4. First-aid measures
Descriptions of first-aid measures
General measures
Immediately call a POISON CENTER/doctor/physician.
Keep victim warm and quiet.
Call emergency medical service.
Do not use mouth-to-mouth method if victim ingested or inhaled the substance; giveartificial respiration with the aid of a pocket mask equipped with a one-way valve or otherproper respiratory medical device.
Effects of exposure (inhalation, ingestion or skin contact) to substance may be delayed.
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.
Remove and isolate contaminated clothing and shoes.
For minor skin contact, avoid spreading material on unaffected skin.
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.

3/81mol/L Sodium hydroxide solution,
JUNSEI CHEMICAL CO., LTD.,95557jis_E2-3,27/May/2022
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 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.
PUBLIC SAFTY: Ventilate closed spaces before entering.
Remove and isolate contaminated clothing and shoes.
For minor skin contact, avoid spreading material on unaffected skin.
Environmental precautions
Avoid release to headsprings, rivers, lakes, ocean and groundwater.
Methods and materials for containment and cleaning up
Absorb spill with inert material (dry sand, earth, et al), then place in a chemical waste container.
Preventive measures for secondary accident
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.

7. Handling and storage
Precautions for safe handling
Preventive measures(Exposure Control for handling personnel)
Do not breathe 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. No smoking.
(Exhaust/ventilator)
Exhaust/ventilator should be available.

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1mol/L Sodium hydroxide solution,
JUNSEI CHEMICAL CO., LTD.,95557jis_E2-3,27/May/2022(Safety treatments)
Avoid contact with skin.
Avoid contact with eyes.
Safety Measures
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
Acids 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.
StorageConditions 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(Sodium hydroxide)
JSOH(1978) (ceiling) 2mg/m3
ACGIH(1992) STEL: C 2mg/m3 (URT, eye & skin irr)
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. Recommended material(s): neoprene, nitrile, butyl rubber, viton, PVC,
impermeable or chemical resistant rubber
Consult with your glove and/or personnel equipment manufacturer for selection of
appropriate compatible materials.
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.

5/81mol/L Sodium hydroxide solution,
JUNSEI CHEMICAL CO., LTD.,95557jis_E2-3,27/May/2022
9. Physical and Chemical Properties
Information on basic physical and chemical properties
Physical state: Liquid
Color: Colorless
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 basic
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.

10. Stability and Reactivity
Reactivity
Reactivity data is not available.
Chemical stability
Stable under normal storage/handling conditions.
Possibility of hazardous reactions
This product reacts violently with acid.
Conditions to avoid
Contact with incompatible materials.
Heat.
Incompatible materials
Acids, Strong oxidizing agents
Hazardous decomposition products
Sodium oxides.

11. Toxicological Information
Information on toxicological effects
Acute toxicity data is not available.

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1mol/L Sodium hydroxide solution,
JUNSEI CHEMICAL CO., LTD.,95557jis_E2-3,27/May/2022
Labor standard law, Japan; Toxic
Sodium hydroxide
Irritant properties
Skin corrosion/irritation[GHS Cat. based on pH]
11.5 <= pH, accordingly Skin corrosion/irritation: Category 1[GHS Cat. Japan, base data](Sodium hydroxide) pig/rabbit : severe necrosis (ACGIH 7th, 2001 et al)
Serious eye damage/irritation[GHS Cat. based on pH]
11.5 <= pH, accordingly Serious eye damage/eye irritation: Category 1[GHS Cat. Japan, base data](Sodium hydroxide) rabbit : corrosive (SIDS, 2009)
Allergenic and sensitizing effects data is not available.
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](Sodium hydroxide) respiratory system (PATTY 5th, 2001)
STOT-repeated exposure data is not available.
Aspiration hazard data is not available.
Information on other hazards
Data on the preparation itself is not available.

12. Ecological Information
Ecotoxicity
Aquatic toxicity
Hazardous to the aquatic environment (Acute)[GHS Cat. Japan, base data](Sodium hydroxide) Crustacea (Ceriodaphnia reticulata) LC50=40.4mg/L/48hr (SIDS, 2004)
Water solubility(Sodium hydroxide) 109 g/100 ml (20℃) (ICSC, 2010)
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.
Additional data
Data on the preparation itself 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
Dispose of contents/container in accordance with local/national regulation.

7/81mol/L Sodium hydroxide solution,
JUNSEI CHEMICAL CO., LTD.,95557jis_E2-3,27/May/2022
14. Transport Information
UN No., UN CLASSUN No. or ID No.: 1824
UN Proper Shipping Name : SODIUM HYDROXIDE SOLUTIONClass or division (Transport hazard class) : 8Packing group : II
ERG GUIDE No.: 154
IMDG Code (International Maritime Dangerous Goods Regulations)
UN No.: 1824
Proper Shipping Name : SODIUM HYDROXIDE SOLUTIONClass or division : 8Packing group : II
IATA Dangerous Goods Regulations
UN No.: 1824
Proper Shipping Name :SODIUM HYDROXIDE SOLUTIONClass or division : 8Hazard labels : CorrosivePacking group : IIEnvironmental hazards
MARPOL Annex III - Prevention of pollution by harmful substances
Marine pollutants (yes/no) : noMaritime transport in bulk according to IMO instruments
Noxious Liquid ; Cat. Y
Sodium hydroxide(Y-258)
Non Noxious Liquid ; Cat. OS
Water(OS-18)

15. Regulatory Information
Safety, health and environmental regulations/legislation specific for the substance or mixture
Chemicals listed in TSCA Inventory
Sodium hydroxide; Water
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.

16. Other information
GHS classification and labellingH314-Skin Corr. 1: H314 Causes severe skin burns and eye damage
H318-Eye Dam. 1: H318 Causes serious eye damage
H371-STOT SE 2: H371 May cause damage to organs

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1mol/L Sodium hydroxide solution,
JUNSEI CHEMICAL CO., LTD.,95557jis_E2-3,27/May/2022
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
2020 EMERGENCY RESPONSE GUIDEBOOK (US DOT)
2021 TLVs and BEIs. (ACGIH)
JIS Z 7252 : 2019
JIS Z 7253 : 20192021 Recommendation on TLVs (JSOH)
Supplier's data/information
Chemicals safety data management system "GHS Assistant" Version 4.17 (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 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 (NITEpublished in 2020).