Technical Data Sheet

Propylene Glycol 50% USP Grade

USP Grade · 50%

Alliance Code: 50-propylene-glycol-usp-grade
確認日: 2026-07-06
Revision: 1.6

CAS番号: 57-55-6
構造: 構造・PubChem
グレード: USP Grade · 50%

Last reviewed 2026-07-06 by Andre Taki, Chief Commercial Officer.

Identity & Composition

製品名: Propylene Glycol 50% USP Grade
Alliance Code: 50-propylene-glycol-usp-grade
グレード: USP Grade
濃度: 50% v/v
CAS番号: 57-55-6PubChem
化学式: —PubChem
分子量: 76.09PubChem
製品種別: 混合物

Specifications

Test	Specification	Typical	Method	Source
Assay	50.0 - 51.0 % v/v	50.09 %	—	Interpreted
Freeze point	-28.6 °F (-33.7 °C) max	-28.8 °F (-33.8 °C)	ASTM D1177	Interpreted
Dilution water	Purified Water USP; conductivity ≤ 1.3 µS/cm @ 25 °C	Passes test	USP <1231> / conductivity USP <645>	Interpreted
Acidity	not more than 0.10 mL of 0.10 N sodium hydroxide	0.03	USP monograph titration, 0.10 N NaOH	Interpreted
Chloride	0.0035% max	0.000018 %	USP <221>	Interpreted
Heavy metals	2.5 ppm max	0.25 ppm	Heavy metals (as Pb), sulfide colour comparison against lead standard	Interpreted
Iron	0.26 ppm max	0.019 ppm	—	Interpreted
Limit of Diethylene Glycol	0.05% max	0.0019 %	GC, flame ionization detector, 0.53-mm x 30-m fused-silica G43 column, 2,2,2-trichloroethanol internal standard	Interpreted
Limit of Ethylene Glycol	0.05% max	0.00028 %	GC, flame ionization detector, 0.53-mm x 30-m fused-silica G43 column, 2,2,2-trichloroethanol internal standard	Interpreted
Residue on ignition	0.0036 wt% max	0.00029 wt%	Ignition of 50 g, residue moistened with 0.5 mL sulfuric acid and ignited to constant weight	Interpreted
Sulfate	0.0031% max	0.00031 %	USP <221>	Interpreted
arsenic	0.5 ppm max	0.007 ppm	—	Interpreted
dpg	0.05 % max	0.018 %	—	Interpreted
pb	0.51 mg/kg max	0.0037 mg/kg	—	Interpreted
meg	0.0005 % max	0.00028 %	—	Interpreted
po	0.0005 % max	0.00010 %	—	Interpreted
tpg	0.015 % max	0.0021 %	—	Interpreted
Color, Pt-Co	10 APHA (maximum)	4 APHA	Platinum-cobalt (APHA) color scale	Interpreted
Odor	Pass	Passes test	Sensory (odor) evaluation	Interpreted
Residual solvents	Pass	Passes test	USP <467>	Interpreted
Suspended matter	Pass	Passes test	—	Interpreted
Composition	50 % propylene glycol / 50 % deionized water, by volume	Conforms	By formulation; batch weights (scale ticket)	Interpreted

Values are reproduced from the current product reference. Source labels do not by themselves establish a supplier guarantee or a test result for your lot. Confirm applicable acceptance limits and request lot-specific documentation.

Available GradesSame CAS, alternate grades and concentrations

グレード	濃度	Typical Assay	SKU	TDS
This grade USP Grade	50%	—	current	current
—	60%	—	propylene-glycol-60-inhibited	View TDS →
Technical	60%	—	propylene-glycol-60-technical-grade	View TDS →
USP	60%	—	propylene-glycol-60-usp-grade	View TDS →
Technical Grade	40%	—	40-propylene-glycol-technical-grade	View TDS →
USP Grade	40%	—	40-propylene-glycol-usp-grade	View TDS →
—	20%	—	propylene-glycol-20-inhibited	View TDS →
Technical	20%	—	propylene-glycol-20-technical-grade	View TDS →
USP	20%	—	propylene-glycol-20-usp-grade	View TDS →
Technical Grade	—	—	propylene-glycol-technical-grade	View TDS →
USP Grade	—	—	propylene-glycol-usp-grade	View TDS →

各グレードの代表的な含量は、直近ロットの平均値です。代替品として使用する前に、そのグレードがお客様の仕様を満たしていることをご確認ください。

物理的及び化学的性質

Property	値	Source
外観	Clear, colorless to pale liquid	Adjudicated
臭い	Mild, characteristic	Adjudicated
pH	Essentially neutral (unbuffered blend)	Adjudicated
比重	1.040 at 20/20 °C (water = 1)	Adjudicated
密度	1.0384 g/cm³ at 20 °C	Adjudicated
沸点	~106 °C	Adjudicated
融点	-34 °C (freeze / crystallization onset)	Adjudicated
引火点	Not flammable (aqueous solution)	Adjudicated
Solubility (water)	Miscible with water	Adjudicated

Regulatory & Transport

DOT / 49 CFR

国連番号: 非該当Adjudicated
危険有害性クラス: 非該当Adjudicated
容器等級: 非該当Adjudicated
正式輸送品名: 非該当Adjudicated

GHS / OSHA HCS 2024

注意喚起語: 非該当Adjudicated
H-Codes (Hazard Statements): 該当しないECHA C&L Inventory
P-Codes (Precautionary Statements): 該当しないECHA C&L Inventory

許容濃度

OSHA PEL (29 CFR 1910.1000): —no canonical
ACGIH TLV: —no canonical
NIOSH REL: —no canonical
NIOSH IDLH: —no canonical

輸送情報は発行時点の49 CFR 172.101の照会結果を反映しています。データ出典：REL/IDLHはNIOSH Pocket Guide、PELはOSHA Zテーブル。出荷に関わる重要な判断の前に、必ず最新の規制本文で確認してください。

Supplier Qualification Packet

One zipped download containing the TDS, SDS, latest lot COA (when available), and a fresh Letter of Continuing Guaranty for Propylene Glycol 50% USP Grade. Every file included is SHA-256 hashed and listed in a manifest your QA team can audit.

Download audit packet

Applications

即使用可能な propylene glycol および water の混合物（50% PG）：密閉系システム用熱媒体および不凍液；保湿剤および溶媒キャリア。Adjudicated

Storage & Handling

Recommended Storage: 酸化剤から離した冷涼で乾燥した場所に密閉して保管すること（吸湿性）。ステンレス鋼、炭素鋼、ポリエチレンまたはポリプロピレン製の容器。Adjudicated
Handling Precautions: 耐薬品性手袋および飛沫防護ゴーグルを着用してください。高温の表面や高温のプロセス機器との接触を避けてください。インヒビターは使用中に消耗します。やみくもに補充せず、監視してください。Class-level guidance — not product-specific; the SDS controls.
Incompatibilities: 強酸化剤、強酸、強塩基。Adjudicated
Shelf Life: Consult Technical Services for product-specific shelf life

For full hazard, PPE, and emergency response guidance, refer to the Safety Data Sheet (SDS) for this product. The SDS controls in all cases where guidance differs.

Packaging & Logistics

Shipping Description (US DOT)

Not regulated for transport.

Confirm against shipping documents and carrier requirements before tender.

NMFC Class

Revision History

Last reviewed 2026-07-06 by Andre Taki, Chief Commercial Officer, DOT Hazmat–certified (49 CFR 172.704).

Version	Date	Change	Trigger
1.6	2026-10-21	Canonical data updated: 1 field changed via the provenance/adjudication pipeline. physicalProperties· canonical change (coa.data_provenance / adjudication)	canonical_change
1.5	2026-10-20	Canonical data updated: 2 fields changed via the provenance/adjudication pipeline. density· canonical change (coa.data_provenance / adjudication) specificGravity· canonical change (coa.data_provenance / adjudication)	canonical_change
1.4	2026-10-13	Canonical data updated: 5 fields changed via the provenance/adjudication pipeline. incompatible_materials· canonical change (coa.data_provenance / adjudication) conditions_to_avoid· canonical change (coa.data_provenance / adjudication) hazardous_decomposition_products· canonical change (coa.data_provenance / adjudication) storage_precautions· canonical change (coa.data_provenance / adjudication) recommended_use· canonical change (coa.data_provenance / adjudication)	canonical_change
1.3	2026-09-09	Canonical data updated: 1 field changed via the provenance/adjudication pipeline. physicalProperties· canonical change (coa.data_provenance / adjudication)	canonical_change
1.2	2026-07-24	Canonical data updated: 1 field changed via the provenance/adjudication pipeline. physicalProperties· canonical change (coa.data_provenance / adjudication)	canonical_change
1.1	2026-07-06	Canonical data re-verified: 4 fields updated against independent vendor SDSs, CLP Annex VI, 49 CFR, and OSHA HazCom 2024 (GHS classification, hazard/precautionary codes, signal word, physical properties as applicable). countryOfOrigin· canonical adjudication / reground (coa.data_provenance) dotSubsidiaryHazardClass· canonical adjudication / reground (coa.data_provenance) hsCode· canonical adjudication / reground (coa.data_provenance) physicalProperties· canonical adjudication / reground (coa.data_provenance)	canonical_change
1.0	2026-05-20	Initial URL-first TDS published from canonical chemistry registry.	initial

This Technical Data Sheet is provided for technical reference. The Safety Data Sheet (SDS) controls in all cases where guidance differs. Values reflect Alliance Chemical canonical data at time of generation; subsequent revisions are recorded in the Revision History above.