
Circuitworks® No Clean Flux Remover Pen
No Clean Flux Remover Pen -CW9100
ITW Chemtronics
8125 Cobb Center Drive
Kennesaw, GA 30152
Tel. 770-424-4888 or toll free 800-645-5244
Chemtrec - 1-800-424-9300 or collect 703-527-3887
24/7
ITW Chemtronics
8125 Cobb Center Drive
Kennesaw, GA 30152
Tel. 770-424-4888 or toll free 800-645-5244
Material Safety Data Sheet
1. Product and company identification
Circuitworks® No Clean Flux Remover Pen
2. Hazards identification
Potential acute health effects
Exposure to decomposition products may cause a health hazard. Serious effects may
be delayed following exposure. Harmful by inhalation. At very high concentrations, can
displace the normal air and cause suffocation from lack of oxygen.
Severely irritating to eyes. Risk of serious damage to eyes.
Harmful if swallowed. Irritating to mouth, throat and stomach.
Harmful in contact with skin. Moderately irritating to the skin.
FLAMMABLE LIQUID AND VAPOR. COMBUSTIBLE. CAUSES EYE IRRITATION.
MAY BE HARMFUL IF ABSORBED THROUGH SKIN OR IF SWALLOW ED. MAY
CAUSE SKIN IRRITATION. CONTAINS MATERIAL THAT CAN CAUSE TARGET
ORGAN DAMAGE.
This material is considered hazardous by the OSHA Hazard Communication Standard
(29 CFR 1910.1200).
Potential chronic health effects
No known significant effects or critical hazards.
No known significant effects or critical hazards.
Contains material that can cause target organ damage.
Do not breathe vapor or mist. Do not ingest. Use only with adequate ventilation. Do
not eat, drink or smoke when using this product. Avoid contact with eyes, skin and
clothing. Avoid prolonged contact with eyes, skin and clothing. Keep away from heat,
sparks and flame. Keep container tightly closed. Wash thoroughly after handling.

Circuitworks® No Clean Flux Remover Pen
2. Hazards identification
See toxicological information (Section 11)
Medical conditions
aggravated by overexposure
Pre-existing disorders involving any target organs mentioned in this MSDS as being at
risk may be aggravated by over-exposure to this product.
No known significant effects or critical hazards.
No known significant effects or critical hazards.
No known significant effects or critical hazards.
Over-exposure signs/symptoms
Adverse symptoms may include the following:
nausea or vomiting
Adverse symptoms may include the following:
irritation
redness
Adverse symptoms may include the following:
pain or irritation
watering
redness
Adverse symptoms may include the following:
dizziness/vertigo
drowsiness/fatigue
headache
Contains material which causes damage to the following organs: eye, lens or cornea.
Contains material which may cause damage to the following organs: blood, upper
respiratory tract, skin, central nervous system (CNS).
acetone
3. Composition/information on ingredients
There are no additional ingredients present which, within the current knowledge of the supplier and in the
concentrations applicable, are classified as hazardous to health or the environment and hence require reporting
in this section.
Wash out mouth with water. Do not induce vomiting unless directed to do so by medical
personnel. Never give anything by mouth to an unconscious person. Get medical
attention immediately.
Check for and remove any contact lenses. Immediately flush eyes with plenty of water
for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical
attention immediately.
In case of contact, immediately flush skin with plenty of water for at least 15 minutes
while removing contaminated clothing and shoes. Wash clothing before reuse. Clean
shoes thoroughly before reuse. Get medical attention immediately.
Move exposed person to fresh air. If not breathing, if breathing is irregular or if
respiratory arrest occurs, provide artificial respiration or oxygen by trained personnel.
Loosen tight clothing such as a collar, tie, belt or waistband. Get medical attention
immediately.
Protection of first-aiders
No action shall be taken involving any personal risk or without suitable training. It may
be dangerous to the person providing aid to give mouth-to-mouth resuscitation. Wash
contaminated clothing thoroughly with water before removing it, or wear gloves.

Circuitworks® No Clean Flux Remover Pen
No specific treatment. Treat symptomatically. Contact poison treatment specialist
immediately if large quantities have been ingested or inhaled.
Use dry chemical,
CO₂,
water spray (fog) or foam.
5. Fire-fighting measures
Promptly isolate the scene by removing all persons from the vicinity of the incident if
there is a fire. No action shall be taken involving any personal risk or without suitable
training. Move containers from fire area if this can be done without risk. Use water
spray to keep fire-exposed containers cool.
Flammable liquid. In a fire or if heated, a pressure increase will occur and the container
may burst, with the risk of a subsequent explosion. The vapor/gas is heavier than air
and will spread along the ground. Vapors may accumulate in low or confined areas or
travel a considerable distance to a source of ignition and flash back. Runoff to sewer
may create fire or explosion hazard.
Special protective
equipment for fire-fighters
Fire-fighters should wear appropriate protective equipment and self-contained breathing
apparatus (SCBA) with a full face-piece operated in positive pressure mode.
Hazardous thermal
decomposition products
Decomposition products may include the following materials:
carbon dioxide
carbon monoxide
metal oxide/oxides
Flammability of the product
No action shall be taken involving any personal risk or without suitable training.
Evacuate surrounding areas. Keep unnecessary and unprotected personnel from
entering. Do not touch or walk through spilled material. Shut off all ignition sources.
No flares, smoking or flames in hazard area. Avoid breathing vapor or mist. Provide
adequate ventilation. Wear appropriate respirator when ventilation is inadequate. Put
on appropriate personal protective equipment (see Section 8).
Stop leak if without risk. Move containers from spill area. Use spark-proof tools and
explosion-proof equipment. Approach release from upwind. Prevent entry into sewers,
water courses, basements or confined areas. Wash spillages into an effluent treatment
plant or proceed as follows. Contain and collect spillage with non-combustible,
absorbent material e.g. sand, earth, vermiculite or diatomaceous earth and place in
container for disposal according to local regulations (see Section 13). Dispose of via a
licensed waste disposal contractor. Contaminated absorbent material may pose the
same hazard as the spilled product. Note: see Section 1 for emergency contact
information and Section 13 for waste disposal.
Environmental precautions
6. Accidental release measures
Avoid dispersal of spilled material and runoff and contact with soil, waterways, drains
and sewers. Inform the relevant authorities if the product has caused environmental
pollution (sewers, waterways, soil or air).
Stop leak if without risk. Move containers from spill area. Use spark-proof tools and
explosion-proof equipment. Dilute with water and mop up if water-soluble. Alternatively,
or if water-insoluble, absorb with an inert dry material and place in an appropriate waste
disposal container. Dispose of via a licensed waste disposal contractor.

Circuitworks® No Clean Flux Remover Pen
Store in accordance with local regulations. Store in a segregated and approved area.
Store in original container protected from direct sunlight in a dry, cool and well-ventilated
area, away from incompatible materials (see Section 10) and food and drink. Eliminate
all ignition sources. Separate from oxidizing materials. Keep container tightly closed
and sealed until ready for use. Containers that have been opened must be carefully
resealed and kept upright to prevent leakage. Do not store in unlabeled containers.
Use appropriate containment to avoid environmental contamination.
Put on appropriate personal protective equipment (see Section 8). Eating, drinking and
smoking should be prohibited in areas where this material is handled, stored and
processed. Workers should wash hands and face before eating, drinking and smoking.
Remove contaminated clothing and protective equipment before entering eating areas.
Do not ingest. Avoid contact with eyes, skin and clothing. Avoid breathing vapor or mist.
Use only with adequate ventilation. Wear appropriate respirator when ventilation is
inadequate. Do not enter storage areas and confined spaces unless adequately
ventilated. Keep in the original container or an approved alternative made from a
compatible material, kept tightly closed when not in use. Store and use away from heat,
sparks, open flame or any other ignition source. Use explosion-proof electrical
(ventilating, lighting and material handling) equipment. Use non-sparking tools. Take
precautionary measures against electrostatic discharges. To avoid fire or explosion,
dissipate static electricity during transfer by grounding and bonding containers and
equipment before transferring material. Empty containers retain product residue and
can be hazardous. Do not reuse container.
ACGIH TLV (United States, 3/2012).
STEL: 1782 mg/m³ 15 minutes.
STEL: 750 ppm 15 minutes.
TWA: 1188 mg/m³ 8 hours.
TWA: 500 ppm 8 hours.
NIOSH REL (United States, 1/2013).
TWA: 590 mg/m³ 10 hours.
TWA: 250 ppm 10 hours.
OSHA PEL (United States, 6/2010).
TWA: 2400 mg/m³ 8 hours.
TWA: 1000 ppm 8 hours.
OSHA PEL 1989 (United States, 3/1989).
STEL: 2400 mg/m³ 15 minutes.
STEL: 1000 ppm 15 minutes.
TWA: 1800 mg/m³ 8 hours.
TWA: 750 ppm 8 hours.
ACGIH TLV (United States, 3/2012).
STEL: 553 mg/m³ 15 minutes.
STEL: 150 ppm 15 minutes.
TWA: 369 mg/m³ 8 hours.
TWA: 100 ppm 8 hours.
NIOSH REL (United States, 1/2013).
STEL: 540 mg/m³ 15 minutes.
STEL: 150 ppm 15 minutes.
TWA: 360 mg/m³ 10 hours.
TWA: 100 ppm 10 hours.
OSHA PEL 1989 (United States, 3/1989).
STEL: 540 mg/m³ 15 minutes.
STEL: 150 ppm 15 minutes.
TWA: 360 mg/m³ 8 hours.
TWA: 100 ppm 8 hours.
8. Exposure controls/personal protection

Circuitworks® No Clean Flux Remover Pen
8. Exposure controls/personal protection
AIHA WEEL (United States, 10/2011).
TWA: 10 ppm 8 hours.
Use a properly fitted, air-purifying or air-fed respirator complying with an approved
standard if a risk assessment indicates this is necessary. Respirator selection must be
based on known or anticipated exposure levels, the hazards of the product and the safe
working limits of the selected respirator.
Safety eyewear complying with an approved standard should be used when a risk
assessment indicates this is necessary to avoid exposure to liquid splashes, mists or
dusts. If contact is possible, the following protection should be worn, unless the
assessment indicates a higher degree of protection: chemical splash goggles.
Personal protective equipment for the body should be selected based on the task being
performed and the risks involved and should be approved by a specialist before
handling this product.
When there is a risk of ignition from static electricity, wear anti-static protective clothing.
For the greatest protection from static discharges, clothing should include anti-static
overalls, boots and gloves.
Chemical-resistant, impervious gloves complying with an approved standard should be
worn at all times when handling chemical products if a risk assessment indicates this is
necessary. Considering the parameters specified by the glove manufacturer, check
during use that the gloves are still retaining their protective properties. It should be
noted that the time to breakthrough for any glove material may be different for different
glove manufacturers. In the case of mixtures, consisting of several substances, the
protection time of the gloves cannot be accurately estimated.
Use only with adequate ventilation. Use process enclosures, local exhaust ventilation or
other engineering controls to keep worker exposure to airborne contaminants below any
recommended or statutory limits. The engineering controls also need to keep gas,
vapor or dust concentrations below any lower explosive limits. Use explosion-proof
ventilation equipment.
Wash hands, forearms and face thoroughly after handling chemical products, before
eating, smoking and using the lavatory and at the end of the working period.
Appropriate techniques should be used to remove potentially contaminated clothing.
Wash contaminated clothing before reusing. Ensure that eyewash stations and safety
showers are close to the workstation location.
Recommended monitoring
procedures
If this product contains ingredients with exposure limits, personal, workplace
atmosphere or biological monitoring may be required to determine the effectiveness of
the ventilation or other control measures and/or the necessity to use respiratory
protective equipment. Reference should be made to appropriate monitoring standards.
Reference to national guidance documents for methods for the determination of
hazardous substances will also be required.
Environmental exposure
controls
Emissions from ventilation or work process equipment should be checked to ensure
they comply with the requirements of environmental protection legislation. In some
cases, fume scrubbers, filters or engineering modifications to the process equipment
will be necessary to reduce emissions to acceptable levels.
9. Physical and chemical properties
Closed cup: 39°C (102.2°F) [Tagliabue.]

Circuitworks® No Clean Flux Remover Pen
Reactive or incompatible with the following materials:
oxidizing materials
Under normal conditions of storage and use, hazardous decomposition products should
not be produced.
Avoid all possible sources of ignition (spark or flame). Do not pressurize, cut, weld,
braze, solder, drill, grind or expose containers to heat or sources of ignition. Do not
allow vapor to accumulate in low or confined areas.
10. Stability and reactivity
Conditions to avoid
Incompatible materials
Hazardous decomposition
products
Possibility of hazardous
reactions
Under normal conditions of storage and use, hazardous reactions will not occur.
11. Toxicological information

Circuitworks® No Clean Flux Remover Pen
11. Toxicological information
12. Ecological information
No known significant effects or critical hazards.
Acute EC50 20.565 mg/l Marine water
Acute LC50 6000000 µg/l Fresh water
Crustaceans - Gammarus pulex
Acute LC50 10000 µg/l Fresh water
Acute LC50 100 mg/l Fresh water
Fish - Pimephales promelas Juvenile (Fledgling, Hatchling,
Weanling)
Chronic NOEC 4.95 mg/l Marine water
Chronic NOEC 0.1 ml/L Fresh water
Daphnia - Daphnia magna Neonate
Acute LC50 10000 µg/l Fresh water
Fish - Lepomis macrochirus
Persistence/degradability
No known significant effects or critical hazards.
The generation of waste should be avoided or minimized wherever possible. Disposal
of this product, solutions and any by-products should at all times comply with the
requirements of environmental protection and waste disposal legislation and any
regional local authority requirements. Dispose of surplus and non-recyclable products
via a licensed waste disposal contractor. Waste should not be disposed of untreated to
the sewer unless fully compliant with the requirements of all authorities with jurisdiction.
Waste packaging should be recycled. Incineration or landfill should only be considered
when recycling is not feasible. This material and its container must be disposed of in a
safe way. Care should be taken when handling emptied containers that have not been
cleaned or rinsed out. Empty containers or liners may retain some product residues.
Vapor from product residues may create a highly flammable or explosive atmosphere
inside the container. Do not cut, weld or grind used containers unless they have been
cleaned thoroughly internally. Avoid dispersal of spilled material and runoff and contact
with soil, waterways, drains and sewers.
13. Disposal considerations
Disposal should be in accordance with applicable regional, national and local laws and regulations.
United States - RCRA Toxic hazardous waste "U" List
Acetone (I); 2-Propanone (I)

Circuitworks® No Clean Flux Remover Pen
13. Disposal considerations
Refer to Section 7: HANDLING AND STORAGE and Section 8: EXPOSURE CONTROLS/PERSONAL PROTECTION
for additional handling information and protection of employees.
14. Transport information
Use ORM-D Label
Reportable quantity
33333.3 lbs / 15133.3
kg [5060.5 gal / 19156.
1 L]
Package sizes
shipped in quantities
less than the product
reportable quantity are
not subject to the RQ
(reportable quantity)
transportation
requirements.
FLAMMABLE
LIQUIDS, N.O.S.
(acetone)
FLAMMABLE
LIQUIDS, N.O.S.
(acetone)
FLAMMABLE
LIQUIDS, N.O.S.
(acetone)
Combustible liquid
Irritating material
Target organ effects
15. Regulatory information
Clean Air Act Section 112
(b) Hazardous Air
Pollutants (HAPs)
TSCA 8(a) PAIR
: hexamethyldisiloxane
TSCA 8(a) CDR Exempt/Partial exemption
: Not determined
United States inventory (TSCA 8b)
: All components are listed or exempted.

Circuitworks® No Clean Flux Remover Pen
15. Regulatory information
The following components are listed: ACETONE; PROPYLENE GLYCOL METHYL
ETHER; BENZYL ALCOHOL
Australia inventory (AICS)
: All components are listed or exempted.
China inventory (IECSC)
: All components are listed or exempted.
Japan inventory
: All components are listed or exempted.
Korea inventory
: All components are listed or exempted.
Malaysia Inventory (EHS Register)
: Not determined.
New Zealand Inventory of Chemicals (NZIoC)
: All components are listed or exempted.
Philippines inventory (PICCS)
: All components are listed or exempted.
Taiwan inventory (CSNN)
: Not determined.
International regulations
All components are listed or exempted.
Clean Air Act Section 602
Class I Substances
Clean Air Act Section 602
Class II Substances
DEA List I Chemicals
(Precursor Chemicals)
DEA List II Chemicals
(Essential Chemicals)
Chemical Weapons
Convention List Schedule
I Chemicals
Chemical Weapons
Convention List Schedule
II Chemicals
The following components are listed: Acetone; 2-Propanone
The following components are listed: ACETONE; 2-PROPANONE; PROPYLENE
GLYCOL MONOMETHYL ETHER; 1-METHOXY-2-PROPANOL
The following components are listed: 2-PROPANONE; 2-PROPANOL, 1-METHOXY-;
BENZENEMETHANOL
Composition/information on ingredients
Fire hazard
Immediate (acute) health hazard
Delayed (chronic) health hazard
Sudden
release of
pressure
Immediate
(acute)
health
hazard
Delayed
(chronic)
health
hazard
Composition/information on ingredients

Circuitworks® No Clean Flux Remover Pen
15. Regulatory information
Chemical Weapons
Convention List Schedule
III Chemicals
Hazardous Material
Information System (U.S.A.)
National Fire Protection
Association (U.S.A.)
FLAMMABLE LIQUID AND VAPOR. COMBUSTIBLE. CAUSES EYE IRRITATION.
MAY BE HARMFUL IF ABSORBED THROUGH SKIN OR IF SWALLOW ED. MAY
CAUSE SKIN IRRITATION. CONTAINS MATERIAL THAT CAN CAUSE TARGET
ORGAN DAMAGE.
To the best of our knowledge, the information contained herein is accurate. However, neither the above-named
supplier, nor any of its subsidiaries, assumes any liability whatsoever for the accuracy or completeness of the
information contained herein.
Final determination of suitability of any material is the sole responsibility of the user. All materials may present
unknown hazards and should be used with caution. Although certain hazards are described herein, we cannot
guarantee that these are the only hazards that exist.
Caution: HMIS® ratings are based on a 0-4 rating scale, with 0 representing minimal hazards or risks, and 4
representing significant hazards or risks Although HMIS® ratings are not required on MSDSs under 29 CFR 1910.
1200, the preparer may choose to provide them. HMIS® ratings are to be used with a fully implemented HMIS®
program. HMIS® is a registered mark of the National Paint & Coatings Association (NPCA). HMIS® materials may
be purchased exclusively from J. J. Keller (800) 327-6868.
The customer is responsible for determining the PPE code for this material.
Indicates information that has changed from previously issued version.
Reprinted with permission from NFPA 704-2001, Identification of the Hazards of Materials for Emergency
Response Copyright ©1997, National Fire Protection Association, Quincy, MA 02269. This reprinted material is not
the complete and official position of the National Fire Protection Association, on the referenced subject which is
represented only by the standard in its entirety.
Copyright ©2001, National Fire Protection Association, Quincy, MA 02269. This warning system is intended to be
interpreted and applied only by properly trained individuals to identify fire, health and reactivity hazards of
chemicals. The user is referred to certain limited number of chemicals with recommended classifications in NFPA
49 and NFPA 325, which would be used as a guideline only. Whether the chemicals are classified by NFPA or not,
anyone using the 704 systems to classify chemicals does so at their own risk.