Methyl Jasmonate Storage & Tank Compatibility

Storing Methyl Jasmonate? Start Here

Methyl jasmonate (C₁₃H₂₀O₃, CAS 1211-29-6) is the methyl ester of jasmonic acid, a naturally occurring plant-signaling compound used as a fragrance and flavor ingredient and as an agricultural elicitor that primes plant defense and ripening responses. It is a colorless to pale-yellow, water-insoluble oily liquid with a powerful floral-herbaceous aroma, a density near 1.03 g/mL, and a high boiling point that requires vacuum distillation. Its only mapped GHS hazard is skin sensitization (H317), making it far less acutely toxic than most industrial solvents. From a storage standpoint, however, it behaves like a lipophilic ester: it is readily absorbed into polyolefins. That single property drives the entire material-selection decision, and it is the reason polyethylene tanks are the wrong container for the neat liquid even though the compound itself is comparatively benign.

Polyethylene (HDPE / XLPE) Compatibility - The Honest Verdict

The honest verdict is that polyethylene is unsuitable for bulk storage of neat methyl jasmonate. Although the compound is low in toxicity and chemically stable, it is a lipophilic organic ester and an oily solvent, and esters and oily organics are the classic failure mode for HDPE and crosslinked polyethylene (XLPE). The ester partitions into the polyethylene matrix, where it swells the wall, increases weight, softens the material and progressively reduces tensile and burst strength. Manufacturer chemical-resistance charts consistently down-rate polyethylene for esters and oily hydrocarbons for exactly this reason. For short, incidental contact a polyethylene fitting may survive, but a polyethylene tank holding the neat liquid for weeks or months will degrade. Use stainless steel (304/316) for the vessel and PTFE/PFA or FKM (Viton) for seals and liners. Where the material is supplied as a dilute aqueous emulsion or low-concentration agricultural formulation, polyethylene may become acceptable - verify the specific formulation against the supplier Safety Data Sheet and resistance chart first.

Material compatibility at a glance

Methyl jasmonate is a neutral, water-insoluble organic ester and oily solvent. The correct material of construction is 304 or 316 stainless steel, with PTFE/PFA and FKM (Viton) for seals, gaskets and liners. Polyethylene (HDPE and XLPE), polypropylene and EPDM are unsuitable because the lipophilic ester is absorbed into the polymer, causing swelling and progressive loss of mechanical strength. Confirm elastomer selection against the supplier Safety Data Sheet for the actual concentration and temperature.

Ratings: S suitable · C conditional / limited · U unsuitable. Verify against the cited resistance charts and your concentration/temperature before specifying.

The safety that actually matters

• Wear nitrile or other chemical-resistant gloves and eye protection; the documented hazard is skin sensitization (GHS H317), so prevent repeated or prolonged skin contact to avoid developing an allergic reaction.
• Treat as a combustible liquid: although the flash point is above 230 F, keep away from open flame, sparks and strong heat, and store away from oxidizers.
• Store the neat liquid in stainless steel or fluoropolymer-lined containers, not polyethylene or polypropylene, to prevent ester absorption and container degradation.
• Provide local ventilation when heating or handling warm material; the aroma is intense even though the vapor pressure is low.
• Contain spills with inert absorbent; the liquid is water-insoluble and oily and will not disperse readily in water.
• Keep the Safety Data Sheet accessible and confirm glove, seal and liner selection against it for the actual concentration and temperature in use.

Common questions

Can I store methyl jasmonate in an HDPE or poly tank?

Not for the neat liquid. Methyl jasmonate is a lipophilic oily ester that is absorbed into polyethylene, swelling and weakening the wall over time. Use stainless steel with PTFE or FKM seals. A dilute aqueous formulation may be acceptable in poly - verify against the supplier Safety Data Sheet first.

Is methyl jasmonate dangerous to handle?

Its only mapped GHS hazard is skin sensitization (H317), so it is far less acutely toxic than typical industrial solvents. The main precautions are preventing repeated skin contact with gloves and treating it as a combustible liquid with a flash point above 230 F.

What is the best material of construction for methyl jasmonate?

304 or 316 stainless steel for the vessel, with PTFE/PFA and FKM (Viton) for gaskets, seals and liners. Avoid polyethylene, polypropylene and EPDM, which swell in esters and oily organics.

Why does an oily ester attack polyethylene if it is not corrosive?

The damage is physical, not chemical. Lipophilic esters and oils dissolve into the polyethylene polymer matrix and swell it, causing softening and loss of strength - a different failure mode from the acid or oxidizer attack that damages metals.