NIOSH Pocket Guide to Chemical Hazards

Rosin core solder, pyrolysis products (as formaldehyde) CAS

Synonyms & Trade Names
Rosin flux pyrolysis products, Rosin core soldering flux pyrolysis products
DOT ID & Guide
NIOSH REL*: TWA 0.1 mg/m3 [*Note: "Ca" in the presence of formaldehyde, acetaldehyde, or malonaldehyde. See Appendices A & C (Aldehydes).]
OSHA PEL†: none
IDLH N.D. Conversion
Physical Description
Pyrolysis products of rosin core solder include acetone, aliphatic aldehydes, methyl alcohol, methane, ethane, various abietic acids (the major components of rosin), CO & CO2.
Properties vary depending upon the specific rosin core solder being used.

Incompatibilities & Reactivities
Measurement Methods
NIOSH 2541, 3500
Personal Protection & Sanitation
Skin: No recommendation
Eyes: No recommendation
Wash skin: No recommendation
Remove: No recommendation
Change: No recommendation

First Aid (See procedures)
Eye: Irrigate immediately

Breathing: Respiratory support

Respirator Recommendations To be added later
In the presence of Formaldeyde, Acetaldehyde, or Malonaldehyde:
At concentrations above the NIOSH REL, or where there is no REL, at any detectable concentration: (APF = 10,000) Any self-contained breathing apparatus that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode/(APF = 10,000) Any supplied-air respirator that has a full facepiece and is operated in a pressure-demand or other positive-pressure mode in combination with an auxiliary self-contained positive-pressure breathing apparatus
Escape: (APF = 50) Any air-purifying, full-facepiece respirator (gas mask) with a chin-style, front- or back-mounted organic vapor canister having a high-efficiency particulate filter/Any appropriate escape-type, self-contained breathing apparatus
Exposure Routes inhalation
Symptoms Irritation eyes, nose, throat, upper respiratory system
Target Organs Eyes, respiratory system

Cancer Site [nasal cancer; thyroid gland tumors in animals (in presence of Formaldehyde, Acetaldehyde, or Malonaldehyde)]