Product Name: dowex* marathon* c (H) Cation Exchange Resin Issue Date: 01/25/2010 Print Date

Inhalation:
No adverse effects are anticipated from inhalation. Vapors are unlikely due to physical 
properties.
Material Safety Data Sheet 
The Dow Chemical Company

---

Product Name: DOWEX* MARATHON* C (H) Cation Exchange 
Resin
Issue Date: 01/25/2010 
Page 2 of 7
Ingestion:
Very low toxicity if swallowed. Harmful effects not anticipated from swallowing small 
amounts.
Component
CAS #
Amount 
Sulfonated polymer of styrene, ethylstyrene and 
divinylbenzene in the hydrogen form
69011-20-7
>= 44.0 - <= 50.0
%
Water
7732-18-5
>= 50.0 - <= 56.0
%
4. First-aid 
measures 
Eye Contact: Wash immediately and continuously with flowing water for at least 30 minutes. Remove 
contact lenses after the first 5 minutes and continue washing. Obtain prompt medical consultation, 
preferably from an ophthalmologist. Eye wash fountain should be located in immediate work area.
Skin Contact: Wash skin with plenty of water.
Inhalation: Move person to fresh air; if effects occur, consult a physician.
Ingestion: No emergency medical treatment necessary.
Notes to Physician: No specific antidote. Treatment of exposure should be directed at the control of 
symptoms and the clinical condition of the patient.
Emergency Personnel Protection: First Aid responders should pay attention to self-protection and 
use the recommended protective clothing (chemical resistant gloves, splash protection). If potential for 
exposure exists refer to Section 8 for specific personal protective equipment.
5. 
Fire Fighting Measures 
Extinguishing Media: Water. Dry chemical fire extinguishers. Carbon dioxide fire extinguishers.