Chemtronics CHT Data Sheet

Base Material

Synthetic Resin

Color

Green

Odor

Odorless

Flux Compatibility

All Types

Process Compatibility

Wave soldering

& Reflow

Solder Compatibility

Lead-free & Tin/Lead

Temperature Stability

550F

Tack-Free Drying Time
(10 mils @ 77F)

15 min.

Cure Time
(10 mils @ 77F)

30 min.

Viscosity @ 77F

50,000 cps

Viscosity Adjusted With

DI water

Flash Point

Nonflammable

Weight/Gallon

8.75 lbs.

Shelflife

2 years

RoHS compliant

Yes

TDS# CHT

CHEMTRONICS

Technical Data Sheet

ChemaskHT

High Temperature Solder Masking Agent

The high temperature, peelable, temporary mask safe for use on sensitive metals

PRODUCT DESCRIPTION

Chemask HT is a fast curing, peelable
temporary spot mask formulated for safe use for
long term heat protection at elevated
temperatures. Chemask HT may be used to
protect pins, posts, contacts and edge
connections in the solder reflow oven or during
conformal coating processes.

 Stable to 550F (288C)
 Stable at long temperature exposure up to 300
 For lead-free or tin/lead processes
 Phthalate-free, low toxicity and environmentally

safe

 Compatible with rosin, water soluble fluxes and

cleaning solvents

 Dries tack free in 15 minutes
 Goes straight into the pre-heat oven
 Removes easily and leaves no residue
 Non-contaminating, non-staining and non-

corrosive

 Compatible with gold, copper, nickel, silver and

OSP finishes

 RoHS compliant

TYPICAL APPLICATIONS

Chemask HT protects:
 Protects component-free areas during wave and

reflow soldering

 Components and pin connectors
 Temperature sensitive components during wave

or reflow soldering

TYPICAL PRODUCT DATA AND
PHYSICAL PROPERTIES

o

F

COMPATIBILITY

Chemask HT is generally compatible with most
materials used in printed circuit board
fabrication. As with any solder masking agent,
compatibility with substrate should be
determined on a non-critical area prior to use.

APPLICATION METHODS

Squeeze Bottle/Syringe

Yes

Spatula

Yes

Screening

Yes

Automatic Dispensing

Yes

Removal

By hand

Clean-up before curing

Use water

ENVIRONMENTAL IMPACT DATA

CFC

0.0%

VOC

0.0%

HCFC

0.0%

HFC

0.0%

GWP

0

ODP

0.0

DISTRIBUTED BY:

USAGE INSTRUCTIONS

For industrial use only.
Read MSDS carefully prior to use.
Chemask HT solder masking agent is engineered
for all electronic manufacturing applications. When
applying by hand using squeeze bottle or spatula,
insure that all areas of the pre-tinned hole are evenly
covered on the side to be soldered. Automatic
dispensing equipment may also be used as
appropriate. Chemask HT may also be screen
printed. Depending on ambient conditions,
temporary mask may remain on assemblies for
extended periods of time prior to processing.

REMOVAL:

After allowing the Chemask® HT to fully cure, the
temporary mask can be removed by hand or using
tweezers. When removing after long term heat
exposure allow the surface 5 minutes to cool before
removal.

AVAILABILITY

CMHT8 8 oz. Squeeze Bottle
CMHT1 1 Gal. Liquid

TECHNICAL & APPLICATION
ASSISTANCE

Chemtronics provides a technical hotline to answer
your technical and application related questions.

The toll free number is 1-800-TECH-401, or e-mail

us at [e-mail] .

Chemtronics is also accessible on the web. Visit us
at www.chemtronics.com.

ENVIRONMENTAL IMPACT DATA

CFC, HCFC, VOC, and HFC numbers shown are the content by
weight. Ozone depletion potential (ODP) is determined in
accordance with the Montreal Protocol and U.S. Clean Air Act
of 1990. The ODP of this product is 0.0. It is the sum of the
ODP of the substances that may contribute to the depletion of
stratospheric ozone, based upon the weight of each substance in
the product’s formulation. Global warming potential (GWP) is
calculated based on a 100 year time horizon. Carbon dioxide
has a GWP of 1.

NOTE:

This information is believed to be accurate. It is
intended for professional end users having the skills
to evaluate and use the data properly.
CHEMTRONICS does not guarantee the accuracy of
the data and assumes no liability in connection with
damages incurred while using it.

Chemtronics and Chemask are a registered trademark of
Chemtronics. All rights reserved. All rights reserved. All other
trademarks herein are trademarks or registered trademarks of their
respective owners.