Tartaric Acid Caster Compatibility

Chemical Overview

Molecular Formula: C₄H₆O₆

Physical Properties: Tartaric acid is a white crystalline solid, soluble in water (139 g/100 mL at 20°C), with a pH of ~2 in solution. It has a melting point of 171-174°C and a density of 1.76 g/cm³. It is a weak organic acid, non-corrosive to most materials. (Source: PubChem)

Industrial Applications

Tartaric acid is used in:

• Food Industry: As an acidulant in beverages and candies.
• Pharmaceuticals: In effervescent tablets and creams.
• Wine Production: To adjust acidity in wines.
• Exposure Scenarios: Spills in food or wine processing may contact caster wheels.

Wheel Material Compatibility Summary

Best Suited Materials (A/B Ratings): Polyolefin, Nylon, and Phenolic (A) resist weak acids. Most materials (B) show minimal interaction.

Materials to Avoid (C/D Ratings): Avoid metals (Ductile Cast Iron, Forged Steel) in prolonged exposure due to minor corrosion risks.

Wheel Compatibility Table

Wheel Material	Interaction Description	Rating
Ductile Cast Iron	Minor corrosion possible with prolonged exposure.	B
Elastomer	Resistant to weak acids; unaffected.	A
Forged Steel	Minor corrosion possible in wet conditions.	B
Neoprene/Nylon Glass Core	Both resist weak acids; unaffected.	A
Nylon	Excellent resistance to weak acids.	A
Nylon Glass Filled	Similar to nylon; highly resistant.	A
Phenolic	Resistant to weak acids; unaffected.	A
Polyolefin	Excellent inertness; unaffected.	A
Polyurethane on Aluminum Core	Polyurethane and aluminum resist weak acids.	A
Polyurethane on Iron Core	Polyurethane resists; iron minimally affected.	B
Rubber	Resistant to weak acids; minimal impact.	A
Solid Elastomer	Resistant to weak acids.	A
Thermoplastic Rubber	Resistant to weak acids.	A
Urethane	Resistant to weak acids; minimal impact.	A
V-Grooved Iron	Minor corrosion possible with prolonged exposure.	B

Conclusion

Tartaric acid’s weak acidity makes Polyolefin, Nylon, and Phenolic wheels (A ratings) excellent choices. Avoid prolonged exposure of metals (Ductile Cast Iron, Forged Steel) to prevent minor corrosion (B ratings). For assistance, contact CasterTech.