Empirical Formula: C₃H₅IO₂
Molecular Weight: 199.9751 g/mol
EINECS: 205-499-0 
Index of Refraction: 1.58
Density: 2.185 g/cm³
Flash Point: 110.9 °C
Enthalpy of Vaporization: 54.75 kJ/mol
Boiling Point: 259.7 °C at 760 mmHg
Vapour Pressure: 0.00383 mmHg at 25 °C
Melting point: 80-83 °C(lit.)
Sensitive: Light sensitive
Appearance: White to yellow crystalline powder
Structure of 3-Iodopropanoic acid (CAS NO.141-76-4):
                          
IUPAC Name: 3-Iodopropanoic acid
Product Category of 3-Iodopropanoic acid (CAS NO.141-76-4): omega-Iodocarboxylic Acid;omega-Functional Alkanols, Carboxylic Acids, Amines & Halides;Carbonyl Compounds

 3-Iodopropanoic acid (CAS NO.141-76-4) hasn't been listed as a carcinogen by NTP, IARC, ACGIH, or CA Prop 65. You can see actual entry in RTECS for complete information.

Reported in EPA TSCA Inventory.

Moderately toxic by skin contact. Questionable carcinogen with experimental tumorigenic data. Mutation data reported. When heated to decomposition it emits toxic fumes of I⁻.
Hazard Codes: C
Risk Statements: 34 
R34:Causes burns.
Safety Statements: 26-27-28-36/37/39-45 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S27:Take off immediately all contaminated clothing. 
S28:After contact with skin, wash immediately with plenty of soap-suds. 
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection. 
S45:In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.)

 3-Iodopropanoic acid , its cas register number is 141-76-4. It also can be called Propanoic acid, 3-iodo- ; .beta.-Iodopropionic acid ; and Ethylacetaat . It is hazardous, so the first aid measures and others should be known. Such as: When on the skin: should flush skin with plenty of water immediately for at least 15 minutes while removing contaminated clothing. Or in the eyes: Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. While, it's inhaled: Remove from exposure and move to fresh air immediately. Then you have the ingesting of the product: do not induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.
In addition, 3-Iodopropanoic acid (CAS NO.141-76-4) could be stable under normal temperatures and pressures. It is not compatible with strong oxidizing agents, strong bases. And also prevent it to broken down into hazardous decomposition products: hydrogen chloride, carbon monoxide, carbon dioxide.