Introduction
① Gas purity and indicated concentration
Our gas purity definition should be balance by deducting the sum of total spec. value of impurities except for H2O.
| P＝100−（A×1／10000） P: Purity(%), A: sum of total impurities (ppm) |
※Based on the definition of JIS K1107
The indication about each impurities' concentration is showed in vol% or wt%.
② Filling weight (filling pressure)
Filling pressure is shown conversion value of gauge pressure at 35℃ by SI unit (MPa).
The content of all liquid gases and some compressed gases is shown in weight.
③ Gas property indication
Each symbols are depend on JIMGA specification, based on "guideline for warning label of chemical substances".
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It shall burn by ignition, such as fire, spark and so on, in the air or oxidizing gas. It has given flammable range, from lower to upper, in the air. Under The High Pressure Gas Safety Law, flammable gas shall be defined that lower explosion concentration is less than 10% or difference between lower and upper is more than 20%. (Spontaneous combustibility): It shall be defined that gas burns by exposure to air spontaneously without any source of ignition. ※Flammable gases are included in this classification. |
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It is self-decomposed gas. Required very carefully handling and cautions. |
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It will be very dangerous explosion mixture gas by exposure or blend to flammable gas even it will not burn spontaneously but composition promotion and oxidation effect. |
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Under The High Pressure Gas Safety Law, it shall be defined that allowable concentration under exposure for 8 hours is less than 200ppm. This label apply to gas that is designated "Toxic substances out of medical use" under Poisonous and Deleterious Substance Control Act. |
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Under The High Pressure Gas Safety Law, it shall be defined that allowable concentration under exposure for 8 hours is less than 200ppm. This label apply to gas that is designated Toxic gas except for "Toxic substances out of medical use" under Poisonous and Deleterious Substances Control Act. The allowable concentration is recommendation value by ACGIH(version of year 2007). |
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In general, it will not burn metal materials under dry condition but it may be turned to burn metal materials by exposure to water or halogen compounds. |
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This label apply to asphyxiation, specific hazardous property (mutagenic property) and so on. |
① Gases
Our gas purity definition should be balance by deducting the sum of total spec.
② Specifications
Purity and impurities concentration of specification value for each grade.
※Specification value will be subject to change without prior notice.
③ Cylinder・Content・Valve
It is standard spec of Taiyo Nippon Sanso
If you need further information, please feel free to contact us.
④ Mixed Gas specification
Standard specification of mixture gas
If you need further information, please feel free to contact us.
⑤ Gas property
* The definition of "-" shall be "not setup" or "no knowledgement".
* Vapor pressure：the value is in 20℃ without any description of temperature condition.