Harmful by inhalation, in contact with skin, and if swallowed. 
H315:Causes skin irritation 
H319:Causes serious eye irritation 
H335:May cause respiratory irritation 
P261:Avoid breathing dust/fume/gas/mist/vapours/spray 
Wear protective gloves/protective clothing/eye protection/face protection 
P280: 
P305+P351+P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses if present 
and easy to do – continue rinsing 
P304+P340:IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing 
P405:Store locked up 

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Section3. Composition/information on ingredients.
2-Methylaminopyrimidine-5-boronic acid, pinacol ester 
Ingredient name: 
CAS number:904326-88-1 

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Section4. First aid measures
Immediately wash skin with copious amounts of water for at least 15 minutes while removing 
Skin contact: 
contaminated clothing and shoes. If irritation persists, seek medical attention. 
Eye contact:Immediately wash skin with copious amounts of water for at least 15 minutes. Assure adequate 
?ushing of the eyes by separating the eyelids with ?ngers. If irritation persists, seek medical 
attention. 
Inhalation:Remove to fresh air. In severe cases or if symptoms persist, seek medical attention. 
Wash out mouth with copious amounts of water for at least 15 minutes. Seek medical attention. 
Ingestion: 

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Section5. Fire ?ghting measures
In the event of a ?re involving this material, alone or in combination with other materials, use dry 
powder or carbon dioxide extinguishers. Protective clothing and self-contained breathing apparatus 
should be worn. 

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Section6. Accidental release measures
Personal precautions: Wear suitable personal protective equipment which performs satisfactorily and meets local/state/national 
standards. 
Respiratory precaution:Wear approved mask/respirator 
Hand precaution:Wear suitable gloves/gauntlets 
Skin protection:Wear suitable protective clothing 
Eye protection:Wear suitable eye protection 
Methods for cleaning up: Mix with sand or similar inert absorbent material, sweep up and keep in a tightly closed container 
for disposal. See section 12. 
Environmental precautions: Do not allow material to enter drains or water courses. 

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Section7. Handling and storage
Handling:This product should be handled only by, or under the close supervision of, those properly quali?ed 
in the handling and use of potentially hazardous chemicals, who should take into account the ?re, 
health and chemical hazard data given on this sheet. 
Storage:Store in closed vessels, refrigerated. 

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Section8. Exposure Controls / Personal protection
Engineering Controls: Use only in a chemical fume hood. 
Personal protective equipment: Wear laboratory clothing, chemical-resistant gloves and safety goggles. 
General hydiene measures: Wash thoroughly after handling. Wash contaminated clothing before reuse. 

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Section9. Physical and chemical properties
Not speci?ed 
Appearance: