Gelo seco via ar: 2025 Conformidade, Dimensionamento & POPS
Se você enviar produtos congelados, dry ice via air remains the fastest, most reliable way to hold ≤ −18 °C in transit. Em 2025 you’ll pass acceptance by venting the package, marcação UN1845 with net kilograms, applying a Aula 9 rótulo, and adding the correct Em Waybill (Awb) entries. Plano 5–10 lb/dia of dry ice for small shippers and remember the 2.5 kg passenger e 5 lb USPS air limits. This guide blends regulation, field practice, and carrier nuance you can apply today.
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What does dry ice via air require in 2025? (Pi 954, UN1845, Aula 9, Rede - kg, AWB order)
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How much should you pack for 24–72 hours? (5–10 lb/day rule + physics‑based check)
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How do you pack, rótulo, and document to pass acceptance? (10- POP minuto)
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What are passenger and postal limits? (2.5 kg baggage, 5 lb USPS air)
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When to choose dry ice vs. PCM/gel? (decision tool for lanes and temperatures)
What does dry ice via air require in 2025?
Core answer: Use packaging that vents CO₂, mark the proper shipping name (“Gelo seco” ou “Dióxido de carbono, sólido") com UN1845 e o Massa da rede seca (kg) on each package, e aplique um Aula 9 rótulo. Para carga, the AWB must show UN1845 → proper name → package count → net kg in that order. Airlines increasingly collect net kg at booking to manage aircraft CO₂ limits. Siga o 2025 acceptance checklist to avoid refusals.
Por que isso importa (expanded): “Vented” means never sealing dry ice in airtight liners; pressure from sublimating CO₂ can rupture packaging. Operators and integrators review UN number, nome, NET KG, and hazard label during acceptance, and many ask for net kg during booking. Keep baggage rules separate: 2.5 kg por passageiro is not a cargo limit; cargo follows Pi 954 e variações do operador. Craft two micro‑SOPs if teams sometimes travel with samples and sometimes tender freight—one for carga and one for baggage.
How to mark UN1845 and Class 9 para dry ice via air
Lugar UN1845 and the proper name on the same face as the Aula 9 label when space allows. Keep the 100 mm diamond unobstructed—don’t write inside it. Imprimir NET KG per package clearly; if you use an overpack, repeat or aggregate the total net kg on the overpack. Most carriers align on these details and may specify minimum font size or label placement, so train packers to apply marks consistently before tender.
| Awb & Package Requirement | What to Write | Where it Goes | Why it Matters |
|---|---|---|---|
| Número da ONU | UN1845 | Package & Awb | Identifies dry ice as Class 9 DG |
| Nome adequado | Gelo seco / Dióxido de carbono, sólido | Package (same face as Class 9 when possible) | Standardizes hazard communication |
| Massa líquida | X kg por pacote | Package (and overpack total if used) | Aircraft CO₂ load management |
| Etiqueta de perigo | Aula 9 (100 mm) | Package exterior | Acceptance checkpoint; keep unobscured |
Practical tips you can use now
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Never seal liners: Use vent‑friendly pouches or leave liners open.
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Camada com inteligência: Bottom pouch → product → top pouch; add sides for 48–72 h lanes.
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Condição prévia: Hard‑freeze product; pre‑chill the shipper to cut early loss.
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Book with numbers: Have net‑kg por pacote ready during booking.
Caso do mundo real: A confectioner split 10 lb into two pouches, printed UN1845 with net kg on the same face as Aula 9, added the AWB entries in order, and cleared acceptance on the first attempt—even with a connection delay.
How much dry ice via air você precisa por 24 a 72 horas?
Short rule: Comece com 5–10 lb. (2.3–4,5 kg) per 24 h for a small (≈10–20 L) expedidor isolado. Use the higher end for hot lanes, Frequente das aberturas de porta, or lower‑R insulation. Validate with a quick lane test and add a “delay day” if your route stalls.
Physics check (to right‑size): Dry ice’s cooling capacity comes from its sublimation energy (~571 KJ/kg). If you estimate your shipper’s hourly heat leak, you can compute a minimum dry‑ice mass and then add 10–20% buffer.
Quick sizing table (10–20 L shipper)
| Duração | Leve (≤22 ° C.) | Esquentar (23–30 ° C.) | Quente (≥31 ° C.) | O que isso significa para você |
|---|---|---|---|---|
| ~ 24h | 2–3kg | 3–5kg | 5–6kg | Split into ≥2 pouches for surface coverage |
| ~ 48h | 4–6kg | 6–8kg | 8–11kg | Add a thin −20 °C PCM at product face |
| ~ 72h | 6–8kg | 9–12kg | 12–15kg | Consider higher‑R insulation or a larger box |
Como embalar, rótulo, e documento dry ice via air (Pi 954)?
10- POP minuto (printable):
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Congelar & estágio: Product ≤ −18 °C; pre‑chill the shipper.
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Bag & split: Load dry ice into vent‑friendly pouches; split into two or more.
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Camada: Bottom pouch → payload → top pouch; fill voids lightly.
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Ventilação: Close securely but não make airtight.
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Marca & rótulo: UN1845, Nome adequado, NET KG, Aula 9 on same face when size allows.
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Overpack (se usado): Show total net kg on the overpack.
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AWB entries: UN1845, Nome adequado, package count, NET KG (in that order).
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Book with net kg: Operators may check aircraft‑type limits before acceptance.
Passageiro & postal limits for dry ice via air—what changes on baggage and mail?
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Bagagem de passageiros: With airline approval you may carry ≤2,5 kg (5.5 Libra) por passageiro, in vented packaging marked “Dry ice/Carbon dioxide, solid” and showing net quantity. This rule does não apply to cargo.
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USPS AIR CORREIO: ≤ 5 lb per mailpiece under Packaging Instruction 9A; package must vent.
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Domestic ground (NÓS.): Dry ice alone is generally not regulated, but you still must vent and protect handlers from CO₂ exposure. Keep your dry ice via air SOP separate from ground rules.
Dry ice via air or PCM/gel—how should you choose?
Use dry ice via air when any two are true:
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Tempo de trânsito > 36 h
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Ambient peaks ≥ 30 °C
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Product must stay ≤ -18 ° C. (no partial thaw)
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Operator accepts UN1845 on your service
If not, trial a −20 °C or +5 °C PCM (Material de mudança de fase) with higher‑R insulation to reduce DG handling and simplify acceptance.
Interactive self‑check (score yourself)
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Packaging vents CO₂ (yes = 1)
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Aula 9 label unobscured (yes = 1)
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UN1845 + Nome adequado + NET KG printed (yes = 1)
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AWB entries in order (yes = 1)
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Overpack shows total net kg (se usado) (yes = 1)
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Net kg provided at booking (yes = 1)
Score 5–6: flight‑ready. Score ≤ 4: fix gaps before tender.
2025 desenvolvimentos & trends in dry ice via air
O que há de novo: O 2025 cycle tightened the practical expectation to provide net dry‑ice kg during booking so operators can check aircraft CO₂ limits. Carriers refreshed acceptance job aids (label size/placement; Não escreva dentro do diamante). Many brands now pair a thin −20 °C PCM at the product face with perimeter dry ice to reduce DG mass while damping door‑open spikes.
Último em um olhar
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Booking data matters: Net kg collected up front to validate aircraft limits.
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Operator checklists updated: Emphasis on UN1845, net‑kg marks, and clear Class 9 colocação.
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Pacotes híbridos: Small PCM layer + dry ice → fewer spikes without sacrificing frozen integrity.
Insight de mercado (plain English): Expect continued growth in frozen lanes and greater use of validated shippers, loggers, and printable SOPs so teams can train in minutes and pass acceptance reliably.
Perguntas frequentes
Do I need a Shipper’s Declaration for dry ice via air?
Not when dry ice only refrigerates non‑dangerous goods. You must still mark the package (UN1845, Nome adequado, NET KG), Aplicar aula 9, and add the AWB entries in order. Use the acceptance checklist to self‑audit.
How much dry ice via air for 48 horas?
Plano 10–20 lb for a small insulated shipper, increasing toward 20 lb for hot lanes or frequent door‑opens, then tune via a lane test.
What’s the per‑package limit for cargo?
Carrier job aids commonly reference ≤ 200 kg net dry ice per package under PI 954; aircraft‑level limits can also apply. Confirm operator variations if you approach high masses.
Can I use dry ice via air for food shipments?
Sim. For frozen foods (por exemplo, sorvete) Use gelo seco; for 2–8 °C groceries, switch to PCM/gel to avoid DG handling. Keep packaging vented either way.
What causes most acceptance failures?
Airtight inner liners and missing NET KG Marcas. Keep dry ice unsealed and print net kg on each package (and overpack).
Resumo & Recomendações
Resumindo: To fly dry ice via air, Ventive o pacote, marca UN1845 with the proper name and NET KG, aplicar Aula 9, and complete the AWB in order. Size refrigerant at 5–10 lb/dia, Validar em sua pista, and provide net kg at booking. Keep baggage/postal rules separate.
PRÓXIMOS PASSOS:
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Print labels and a one‑page acceptance checklist. 2) Run one lane test and tune dry‑ice kg by ±10–20%. 3) Add a thin −20 °C PCM at the product face for hot lanes. 4) Train packers on venting, EPI, e entradas AWB.
Suggested internal links (anchor text)
Visual aids
Sobre Tempk
Nós projetamos dry ice via air packouts that pass acceptance and protect payloads. Our planners combine validated shippers, PI 954‑ready labels, and lane‑based sizing to reduce claims and speed onboarding with carriers. Clients choose us for fast SOPs, practical training, and support that scales from pilot to nationwide distribution.
CTA: Compartilhe sua pista, massa de carga útil, and box size—get a tailored packout spec and a one‑page acceptance audit you can train in under 15 minutos.
