CAS: 328-42-7 EC No: 206-329-8 MDL No: MFCD00002592 UN No: UN3261; Haz Class: 8; Packing Group: II Powder Molecular Formula: C₄H₄O₅ MW: 132.07 Melting Point: 161° Flash Point: 88°C (190°F)

CAS: 5872-08-2 EC No: 227-527-0 MDL No: MFCD00074827 RTECS: DT5077100 UN No: UN3261; Haz Class: 8; Packing Group: III Crystalline Molecular Formula: C₁₀H₁₆O₄S MW: 232.30 Melting Point: 203-206° (decomposes)

CAS: 563-96-2 EC No: 206-058-5 MDL No: MFCD00149497 RTECS: MD4550000 UN No: UN3261; Haz Class: 8; Packing Group: III Solid Linear Formula: HCOCO₂H·H₂O MW: 92.06 Melting Point: 49-52° Boiling Point: 100° Flash Point: >110°C (>230°F)

CAS: 1571-33-1 EC No: 212-220-6 MDL No: MFCD00002136 RTECS: TD4393000 UN No: UN3261; Haz Class: 8; Packing Group: III Crystalline Molecular Formula: C₆H₇O₃P MW: 158.09 Melting Point: 162-164°

CAS: 4224-70-8 EC No: 224-176-5 MDL No: MFCD00004422 UN No: UN3261; Haz Class: 8; Packing Group: III Crystalline Linear Formula: Br(CH₂)₅CO₂H MW: 195.05 Melting Point: 32-34° Boiling Point: 165-170°/20 mmHg Flash Point: 95°C (203°F)