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0.5mol/L Sodium hydroxide solution,JUNSEI CHEMICAL CO., LTD.,95558jis_E-1,27/11/2017
Date of issue: 27/11/2017

Safety Data Sheet

1. Identification of the substance/mixture and of the company/undertaking
Product identifier:Product name: 0.5mol/L Sodium hydroxide solution
Product code(SDS NO): 95558jis_E-1
Details of the supplier of the safety data sheet
Manufacturer/Supplier: JUNSEI CHEMICAL CO., LTD.
Address: 1-6, Ohmano-Cho, Koshigaya, 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 applicable/Out of classification/Not classifiable
Label elements

Signal word: Danger
HAZARD STATEMENT
Causes severe skin burns and eye damage
Causes serious eye damage
May cause damage to organs after single exposure
PRECAUTIONARY STATEMENT
Prevention
Do not breathe dust/fume/gas/mist/vapors/spray.
Wash contaminated parts thoroughly after handling.
Wear protective gloves.
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 or 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 ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water/shower.
If skin irritation occurs: Get medical advice/attention.
Take off contaminated clothing and wash it before reuse.
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.

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0.5mol/L Sodium hydroxide solution,
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IF SWALLOWED: Rinse mouth. Do NOT induce vomiting.
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(%):2w/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

4. First-aid measures
Descriptions of first-aid measures
General measures
Immediately call a POISON CENTER or doctor/physician.
IF INHALED
Remove person to fresh air and keep comfortable for breathing.
Call a POISON CENTER or doctor/physician if you feel unwell.
IF ON SKIN（or hair）
Take off immediately all contaminated clothing. Rinse skin with water/shower.
Wash with plenty of soap and water.
If skin irritation or rash occurs: Get medical advice/attention.
If skin irritation occurs: Get medical advice/attention.
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 or 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.
Specific hazards arising from the substance or mixture
Containers may explode when heated.

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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/flame resistant/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 after material pick up is complete.
Wear proper protective equipment.
PUBLIC SAFTY: Ventilate closed spaces before entering.
Environmental precautions
Avoid release to the 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.
Prevent entry into waterways, sewers, basements or confined 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 & explosion)
Keep away from heat/sparks/open flames/hot surfaces. - No smoking.
Exhaust/ventilator
Exhaust/ventilator should be available.
Safety treatments
Avoid contact with skin.
Avoid contact with eyes.
Avoid breathing dust, fume, gas, mist or vapor.
Safety Measures/Incompatibility
Wear protective gloves, protective clothing or face protection.
Wear protective gloves.
Wear eye protection/face protection.
Use personal protective equipment as required.
When using do not eat, drink or smoke.
Conditions for safe storage, including any incompatibilities
Recommendation for storage
Store in a well-ventilated place. Keep container tightly closed.
Keep cool. Protect from sunlight.
Store locked up.

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8. Exposure controls/personal protection
Control parameters
No control value data available
Adopted value(Sodium hydroxide)
JSOH(1978) (ceiling limit) 2mg/m3
ACGIH(1992) STEL: C 2mg/m3 (URT, eye & skin irr)
OSHA-PEL(Sodium hydroxide)
TWA 2mg/m3
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 ofappropriate compatible materials.
Eye protection
Wear chemical safety goggle.
Wear eye/face protection.
Safety and Health measures
Wash … thoroughly after handling.
Do not eat, drink or smoke when using this product.
Take off contaminated clothing and wash it before reuse.

9. Physical and Chemical Properties
Information on basic physical and chemical properties
Physical properties
Appearance: Liquid
Color: Colorless
Odor data N.A.
pH: 11.5 <= pH(Strong basic)
Phase change temperature
Initial Boiling Point/Boiling point data N.A.
Melting point/Freezing point data N.A.
Decomposition temperature data N.A.
Flash point data N.A.
Auto-ignition temperature data N.A.
Explosive properties data N.A.
Vapor pressure data N.A.
Vapor density data N.A.
Specific gravity/Density data N.A.
Solubility
Solubility in water: Miscible
n-Octanol /water partition coefficient data N.A.

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0.5mol/L Sodium hydroxide solution,
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10. Stability and Reactivity
Chemical stability
Stable under normal storage/handling conditions.
Possibility of hazardous reactions
Reacts violently with acid.
Conditions to avoid
Contact with incompatible materials.
Heat.
Incompatible materials
Acids
Hazardous decomposition products
Sodium oxides.

11. Toxicological Information
Information on toxicological effects
No Acute toxicity data available
Labor standard law, Japan; Toxic
Sodium hydroxide
Irritant properties
Skin corrosion/irritation[GHS Cat. Japan, base data](Sodium hydroxide) pig/rabbit : severe necrosis (ACGIH 7th, 2001 et al.)Serious eye damage /irritation[GHS Cat. Japan, base data](Sodium hydroxide) rabbit : corrosive (SIDS, 2009)
No Allergenic and sensitizing effects data available
No Mutagenic effects data available
No Carcinogenic effects data available
No reproductive toxicity data available
Delayed and immediate effects and also chronic effects from short- and long-term exposure
STOTSTOT-single exposure[cat.1][Japan published data](Sodium hydroxide) respiratory apparatus/system ( PATTY 5th, 2001 )No Aspiration hazard data available
Additional data
There are no data available on the preparation itself.

12. Ecological Information
Toxicity
Aquatic toxicity
Aquatic acute toxicity component(s) data
[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)
No Persistence and degradability data available
No Bioaccumulative potential data available

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Additional data
There are no data available on the preparation itself.

13. Disposal considerations
Waste treatment methods
Dispose of contents/container in accordance with local/national regulation.

14. Transport Information
UN No, UN CLASS
UN number: 1824
UN proper shipping name: SODIUM HYDROXIDE SOLUTION
Transport hazard class(es): 8Packing group: III
ERG GUIDE NO.: 154
Transport in bulk according to Annex II of MARPOL73/78 and IBC CodeNoxious Liquid ; Cat. Y…Sodium hydroxide
Non Noxious Liquid ; Cat. OS…Water

15. Regulatory Information
Safety, health and environmental regulations/legislation specific for the substance or mixture
US major regulations
TSCA
Sodium hydroxide; Water
Other regulatory information
We are not able to check up the regulatory information in regard to the substances in yourcountry or region, therefore, we request this matter would be filled by your responsibility.
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.

16. Other information
GHS classification and labelling
Skin Corr. 1: H314 Causes severe skin burns and eye damage
Eye Dam. 1: H318 Causes serious eye damage
STOT SE 2: H371 May cause damage to organs after single exposure
Reference Book
Globally Harmonized System of classification and labelling of chemicals, (5th ed., 2013), UN
Recommendations on the TRANSPORT OF DANGEROUS GOODS 19th edit., 2015 UN
Classification, labelling and packaging of substances and mixtures (table3-1 ECNO6182012)2012 EMERGENCY RESPONSE GUIDEBOOK(US DOT)
2017 TLVs and BEIs. (ACGIH)
http://monographs.iarc.fr/ENG/Classification/index.php
Supplier's data/information
NITE Chemical Risk Information Platform（NITE-CHRIP）http://www.safe.nite.go.jp/japan/db.html
GHS Classification Guidance for Enterprises 2013 Revised Edition （August, 2013,METI)
General Disclaimer
This information contained in this data sheet represents the best information currently
available to us. However, no warranty is made with respect to its completeness and weassume no liability resulting from its use. It are advised to make their own tests to7/7
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determinate the safety and suitability of each such product or combination for their own
purposes.
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. Thedata 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 in2015).