MG Chemicals 4140A-945ML, Flux Remover for PC Boards, 32oz Bottle, Case of 6
MG Chemicals 4140A-945ML, Flux Remover for PC Boards, 32oz Bottle, Case of 6
MG Chemicals 4140A-945ML Flux Remover for PC Boards cleans post-solder residues from electronic assemblies. Its low-odor formula removes rosin, non-rosin and no-clean fluxes, as well as ionic and non-ionic residues, with moderate drying time. This listing is a case of six 945 mL bottles, approximately 32 US fluid ounces per bottle.
Best Uses / Applications
- Electronics repair benches cleaning post-solder flux residues.
- PCB rework and prototyping where a bottled liquid cleaner suits the process.
- Assembly maintenance involving compatible plastics and electronic-board materials.
- Removal of ionic and non-ionic soldering residues using a validated cleaning method.
Key Features
- Removes rosin, non-rosin and no-clean fluxes.
- Low odor and moderate dry time, per the manufacturer.
- Safe on most plastics, according to MG Chemicals; check the exact materials before use.
- RoHS compliant, as stated in the manufacturer TDS.
- 945 mL bottle format, sold here as a case of six.
Technical Specifications
| Manufacturer / part number | MG Chemicals / 4140A-945ML |
|---|---|
| Product family | 4140A Flux Remover for PC Boards |
| Format | Bottled liquid |
| Net volume per bottle | 945 mL, approximately 32 US fl oz |
| Net weight per bottle | 719 g, per manufacturer packaging table |
| Sales package | Case of 6 bottles |
| Density at 25°C | 0.8 g/mL, per TDS |
| Viscosity at 25°C | Less than 20.5 mm²/s |
| Flash point | -4°C, per TDS |
| Boiling point | Greater than 83°C, per TDS |
| Auto-ignition temperature | 285°C, per TDS |
| Water miscibility | Partially miscible |
| Drying time | Moderate, qualitative manufacturer description |
| Shelf life | 5 years, per TDS |
| Recommended storage | -20 to 27°C, dry and well ventilated, away from sunlight |
Net contents are not packaged shipping weights. Confirm material compatibility, cleaning technique and acceptance criteria for the specific assembly.
Selection Comparison
| Consideration | 4140A bottled cleaner | 413B heavy-duty cleaner |
|---|---|---|
| Cleaning emphasis | Post-solder residues with a formula described as safe on most plastics | More aggressive cleaning, as recommended by MG Chemicals |
| Material-sensitive work | Check exact plastics, coatings and markings before use | Do not assume plastics compatibility; review the product-specific guidance |
| Current listing format | 945 mL liquid bottle, case of six | Separate product family; check its individual listing and SDS |
Size and Availability Notes
This page is specifically for 4140A-945ML bottles. MG Chemicals' size table marks 4140A-3.78L jugs and 4140A-P pens as discontinued. Their legacy references in older family documentation do not establish availability. Neither discontinued format is offered by this listing.
Safe Handling
Read the liquid SDS before use. 4140A is a highly flammable liquid and vapor, can irritate skin and eyes, may cause drowsiness or dizziness, and may be fatal if swallowed and enters the airways. Use outdoors or in a well-ventilated area, avoid breathing vapors, and use the protective gloves, clothing and eye protection specified in the SDS. Keep away from ignition sources, keep containers tightly closed and follow the SDS's grounding and static-discharge precautions. Avoid environmental release: the SDS identifies long-lasting aquatic toxicity. Do not use this listing as authorization to clean energized equipment.
Frequently Asked Questions
What flux residues does 4140A remove?
MG Chemicals lists rosin, non-rosin and no-clean fluxes, plus ionic and non-ionic residues.
How much is included?
This listing is for six 945 mL bottles. Each bottle has manufacturer-listed net weight of 719 g.
Does “32 oz” mean weight?
Here it describes the approximate fluid-volume size of the 945 mL bottle, not a 32 oz net weight or shipping weight.
Is 4140A safe on every plastic?
No. MG Chemicals says safe on most plastics, not all plastics. Check the exact substrate, coatings and markings before cleaning.
How quickly does it dry?
The manufacturer describes moderate dry time without specifying a universal drying interval. Validate drying under your actual process conditions.
Is the pen included or available on this page?
No. This is the bottled-liquid listing. The manufacturer marks 4140A-P as discontinued.
Is it suitable for food facilities?
The TDS describes use as a non-food chemical in food facilities and says recognition letters are available on request. This is not permission for direct food contact. Obtain the applicable manufacturer documentation and follow your facility's procedure.
Is low odor the same as low hazard?
No. The liquid SDS identifies significant flammability, irritation, aspiration and environmental hazards. Ventilation and other stated precautions remain necessary.
Manufacturer Video
This family video is linked from MG Chemicals' 4140A page. It does not establish availability of every demonstrated packaging format; this listing is for the 945 mL bottle only.
Watch the manufacturer family video
Technical and Safety Documents
4140A Liquid Technical Data Sheet, September 10, 2025
4140A Liquid Safety Data Sheet, version 4.01
