HSChapter 29
U.S. imports of monoalkyl ethers of mono- or di-ethylene glycols (excluding monobutyl) (HS 290944) totaled $282K in April 2026, traded with 9 countries.
Importers of Monoalkyl Ethers of Mono- or Di-Ethylene Glycols (Excluding Monobutyl) paid $52K in duties in April 2026 — an effective duty rate of 18% on $282K in dutiable value, based on actual customs collections rather than the published tariff schedule. Monoalkyl Ethers of Mono- or Di-Ethylene Glycols (Excluding Monobutyl) imports of $282K in April 2026 ran 17% below the year-to-date monthly average of $340K.
Last updated: April 2026 dataMonomethyl ethers of ethylene and diethylene glycol (2909440110) are important solvents in semiconductor photoresist formulations and specialty coatings, making this heading particularly relevant to electronics supply chains. The residual line (2909440150) captures other monoalkyl variants used across industrial cleaning, ink, and pharmaceutical solvent applications. France and South Korea are the leading US suppliers, with Taiwan and Japan also significant sources. Importers should note that certain glycol ethers, including methyl cellosolve, carry reproductive toxicity classifications under GHS, which may trigger additional labeling and SDS requirements.
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Monomethyl ethers of ethylene glycol (methyl cellosolve) and diethylene glycol are used as solvents in photoresist and coating applications for semiconductor fabrication. However, several of these compounds carry reproductive and developmental toxicity classifications, prompting many manufacturers to substitute them with less hazardous alternatives. Importers supplying electronics customers should confirm whether the specific compound meets the buyer's restricted substances list requirements.
Line 2909440110 covers specifically monomethyl ethers of mono- or di-ethylene glycols, while 2909440150 is the residual provision for all other monoalkyl ethers of mono- or di-ethylene glycols not elsewhere specified. Classification turns on whether the alkyl group is methyl; any other alkyl group (ethyl, propyl, etc., excluding butyl which has its own heading) falls to the NESOI line.
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Monthly import values over time
| Country | Imports | Exports | Balance |
|---|---|---|---|
| SWITZERLAND | -- | $2.8M | +$2.8M |
| JAPAN | $27K | $511K | +$484K |
| KOREA, SOUTH | -- | $527K | +$527K |
| BELGIUM | $3K | $440K | +$438K |
| BRAZIL | -- | $352K | +$352K |
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 2909440150 | MONOALKYL ETHERS OF MONO OR DI-ETHYLENE GLYC NESOI | $205K | 18.05% | $37K |
| 2909440110 | MONOMETHYL ETHERS OF MONO OR DI-ETHYLENE GLYCOLS | $76K | 19.43% | $15K |
MONOALKYL ETHERS OF MONO OR DI-ETHYLENE GLYC NESOI
MONOMETHYL ETHERS OF MONO OR DI-ETHYLENE GLYCOLS
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2909440150 | MONOALKYL ETHERS OF MONO OR DI-ETHYLENE GLYC NESOI | $5.0M |
| 2909440110 | MONOMETHYL ETHERS OF MONO OR DI-ETHYLENE GLYCOLS | $1.1M |
MONOALKYL ETHERS OF MONO OR DI-ETHYLENE GLYC NESOI
945.3K kg
MONOMETHYL ETHERS OF MONO OR DI-ETHYLENE GLYCOLS
1.1M kg
NUCLEIC ACIDS & SALTS; OTHER HETEROCYCLIC CMP, NES
HS 293499
HETEROCYCLIC COMP W NITROGEN HETERO-ATM ONLY NESOI
HS 293399
POLYPEPTIDE PROTEIN& GLYCOPROTEIN HORMONES &DERIV
HS 293719
CMPDS CONT AN UNFUSED PYRIDINE RING ETC NESOI
HS 293339
COMP WITH PYRIMIDINE OR PIPERAZINE RING, NESOI
HS 293359
ANTIBIOTICS, NESOI
HS 294190
| Port | Imports | Exports | Balance |
|---|---|---|---|
| NEW ORLEANS, LA | -- | $3.7M | +$3.7M |
| HOUSTON, TX | -- | $1.9M | +$1.9M |
| PORT HURON, MI | -- | $190K | +$190K |