Feedback on GESTIS Substance Database

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D Patrick University 12.10.2022 18:17:31
IT would be wonderful to have API access to this so that it can be searched by chemical name, CAS number or ID.
There is no API interface to access the GESTIS substance database. Commercial use of the data as well as partial or complete transfer into other information systems is not allowed. In case of infringement, an automatic blocking of the IP address regarding access to the GESTIS databases may occur. Only a link to the data sheets is permitted.

RL Narayan -- 12.01.2022 10:15:46
Item: Barium Carbonate CAS: 513-77-9 Above item is listed "Dangerous goods" by IMDG (sea transport), ADR (Road); IATA (Air). It is assigned UN Number 1564 with proper shipping name "Barium Compound, n.o.s (Barium Carbonate)". Hence it is "transport regulated". GESTIS database showing item as "not transport regulated". I am open for discussion to share any further information. Thank you for your attention.
Some time ago we consulted a dangerous goods expert regarding a similar question and the clear answer is transferable to the question on barium carbonate: Barium compounds are only to be assigned to UN No. 1464 "Barium compounds n.o.s." if these barium compounds meet the criteria of Class 6.1 - i.e. toxic barium compounds. Barium carbonate with an Acute oral toxicity: LD50 = 1690 mg/kg bw (ECHA) does not meet the criteria of Class 6.1 and is therefore not to be assigned to UN No. 1464.

Gilbert Brault consulting 03.12.2020 19:37:31
Fantastic resource! Just wonder how you add new substances? I don't find DOICT CAS 64359-81-5 "4,5-dichloro-2-octyl-2H-isothiazol-3-one" would it be possible to add it?
In the GESTIS substance database you find information on about 9000 substances. Due to the large number of hazardous substances we cannot include all of them in our database, or often there is only little information available about the substances, so that we cannot compile an informative substance data sheet. For DOICT we have some safety data sheets available and we will compile a data sheet. Update 12/15/2020: We have compiled the substance data sheet CAS 64359-81-5 "4,5-dichloro-2-octyl-2H-isothiazol-3-one", see

Dagoberto Lara/DF LARA Consultive Engineering Engineering Service 07.08.2020 14:38:13
Only a minor correction suggestion on Ammonium nitrate secction TECHNICAL MEASURES - STORAGE: where "Store apart from sources if ignition and heat" I think the correct is "Store apart from sources of ignition and heat". Thanks for the significant Database.
Thank you very much for your advice. Even small corrections are always welcome. Since we just had an update, you will see that correction online only after the next update in 2 weeks.

Ed Austin 06.07.2020 18:41:53
There is an error in the Chemical Characterisation section for Phosgene. The current test says, "Reacts with water forming nitric acid and carbon dioxid." Phosgene will produce Hydrochloric Acid and Carbon Dioxide when mixed with water, not Nitric Acid.
Thank you very much for the hint. We have corrected the information. You will see the amendment on the Internet after the next update.

Dr. Priti Tayade R&D 13.06.2020 11:06:20
There is no information on CAS no. 27668-52-6. It would be really helpful if you could provide us with the same. Regards.
In the GESTIS substance database you will find information on meanwhile more than 9000 substances. Due to the large number of hazardous substances we cannot include all of them in our database. Often there is only little information available about substances, so that we cannot create a meaningful substance data sheet. Unfortunately this also concerns the substance Dimethyloctadecyl[3-(trimethoxysilyl)propyl]ammonium chloride CAS 27668-52-6. We have no current safety data sheets for the pure substance. However, there is a registration record for this substance at the ECHA Here you will find some information about the substance you are looking for, e.g. classification/labelling, physical and chemical properties, etc.

Hebert Jean-Luc - Xpologistics Transport 17.12.2019 15:09:36
CAS-108-31-6 - Maleic Anhydride. Density is wrong. 20°C = 1.48 kg/l / 60°C = 1.31 kg/l Otherwise good source of information
Thank you very much for your hint. We will change the density accordingly. The last update for this year has already taken place (company holidays from 23.12. - 30.12.2019). Therefore the amendment will come on the internet at the beginning of next year.

Özge ALPTOGA Chemical Engineering 25.09.2019 09:57:28
Hello, This is amazing and helpful database for our research. But I cant find LPG (Liqufied Petroluem Gas)(CAS: 68476-85-7) in this database. Could you please add this chemical. Thank you. Sincerely.
Thanks for the praise. We will add Liquefied Petroleum Gas to our database. However, this will take some time. Here is an informative link to Petroleum gases, liquefied:

Sante Oil&Gas 27.08.2018 13:26:07
Good morning, i didn't find the OEL for the following substances: CAS 8052-42-4 and CAS 92062-05-0. Could you help me? Thanks too much
This entry was answered by E-Mail.

Jean Barros/SLK Group Mechanical Engineer 09.07.2018 16:17:18
Hi, Thank you for the information, they so important for all engineers. I think there is a problem with units of density. For the nitrogen, for example, the unit is mg/m³, but I think that the correct is kg/m³. I search for many gas density and I found this problem with: - Carbon Monoxide; - Carbon Dioxide; - Hydrogen; - Methane; - Nitrogen; - H2O; I don't know if is my problem with units, but I think that the units it´s not correct. I hope have been helping you.
We're sorry, but there must be some misunderstanding on your part. The gas densities in the GESTIS substance database are always given in kg/m³. We have also checked this for the gases listed by you. For water as a liquid, of course, the liquid density in g/cm³ is given.

RAHN AG Manager Safety & Regulatory Affairs 13.04.2018 16:04:28
CAS 200-456-2 (2-Phenylethanol) Gemäss ECHA nicht giftig für die Haut "H319: Causes serious eye irritation." Ist der einzige Warnhinweis. mfg Detlef Seidel
Zum Stoff „2-Phenylethanol“ (CAS-Nr.:60-12-8) existieren zwei Registrierungsdatensätze bei der ECHA, von verschiedenen Herstellern/-Konsortien. Wir beziehen uns auf den zweiten Registrierungssatz mit der von uns zitierten Einstufung: H302; H311 und H319. Im ersten Registrierungssatz wird unter Labelling zwar nur der H319 genannt, aber unter „Classification; + Health hazards“ wird auch der H302 (Harmfull if swallowed) aufgeführt. Des Weiteren werden hier im Kapitel Toxicological information zwei gleichbewertete dermale Studien aufgelistet. Eine unbenannte Studie aus dem Jahr 1987 mit dem Ergebnis: LD50 dermal 2535 mg/kg und damit keine dermale Toxizität vorhanden. Die zweite Studie wird in vielen renommierten toxikologischen Instituten (wie z.B. HSDB) zum Stoff 2-Phenylethanol herangezogen. Auch wir zitieren diese Studie in unserem Datenblatt: LD50 dermal 0,79 ml/kg bzw. 806 mg/kg und damit nach GHS-Einstufungskriterien mit Akute Toxizität, Kategorie 3, Hautkontakt; H311 einzustufen. Wir bleiben daher bei der korrekten Einstufung des von uns zitierten zweiten Registrierungssatzes.

Henrico Lind / CSB MSDS 16.01.2018 11:41:07
Please check the formula by casnumber 74-79-3.
Thank you for your hint. You will see the correct formula after the next update (after about 10 days)

Geoff Hodges Canada 25.09.2017 00:25:59
An absolutely fantastic resource!
Thank you, we really appreciate your praise.

Michele Monopoli - Glomax Srl - Italy HSE 16.11.2016 16:38:19

Mark Rollins, CIH, CSP 03.09.2016 13:31:01
I teach a 4-hour class on using "smart devices" in the health and safety profession. When I get to the section on Apps, I can't tell you how many people are so happy to see a reference like your App. I have used it myself as well, and it is definitely in my "top 10" App list. Along with Angry Birds, of course!
Thank you for your words of praise.

Semicorn School lab 03.02.2016 16:21:50
First your site is amazing and it helps me pretty good with my homework. But i have a question. I was searching for methyl orange but could not find it. When i had found the CAS number on an other site i filled it in at the search and i did find methyl orange but it was put on the site with the name 4-Dimethylaminoazobenzene-4'-sulfonic acid sodium salt. Under identification stood methyl orange so i presume this is metylorange. It is logical to put it under the other name but is there a posibilitie that when you search metyl orange you get redirected to this page? Another question that i have is that at this page i found that it is toxic but there is nothing to be found about first aid at the english and german one. This could be because its new but if not so i would like to know why there is no first aid. Thanks for al the help your site offers me and i hope to get a reaction soon.
Thank you for this hint regarding the search of „methyl orange“. Indeed, methy orange is a synonym of 4-Dimethylaminoazobenzene-4'-sulfonic acid sodium salt. The problem of searching „methyl orange“ is the space between „methyl“ and „orange“. If you type in only „methyl“ and scroll down in the index list you will find „methyl orange“. If you type in „methyl“ and a space, the space will open a new index list. We will try to change this to enable searching either with or without a space. (Supplement 06.10.2016: We have changed the search functionality. Now you can find methyl orange without any problems.) Your 2nd question: The chapters on Occupational Health and Firts Aid are written by experts in this field. We have available this information for more than 2500 substances, but it seems impossible to compile it for all substances in the GESTIS database, due to insufficient information on many substances, due to limited work capacity, and due to the high cost.

Han Damste 22.01.2016 15:15:49
Very informative and easy to use! Looking at pentane I saw density figures absolute and relative to dry air mixed up. Or am I wrong?
We are sorry, there is an error in the database. The first value 0,63 g/cm³ at 20 °C is the liquid density and the second value 2,49 ist the density of the vapour relative to dry air. You will see the corrected data after the next update.

brandweer antwerpen Fire department- hazmat 14.09.2015 14:45:13
and could you change the display to a shorter card allowing an easy overview at a glance of the most important aspects and physical data on an A4 would it be possible to include Emergency response guidebook 2012 safetydistances
We are sorry, changing the display would require a complete new programming of our internet database and this is not possible in the next time, due to limited personell and financial recources.

brandweer antwerpen Fire department- hazmat 14.09.2015 14:37:12
could you add erpg, eagl, teel values
Thank you for your proposal. We have checked the possibility of inclusion of AEGL, ERPG and TEEL values in the GESTIS database. It seems that a unique list of these values does not exist. The link you recommended contains 60-minute AEGLs, ERPGs, or TEELs for 3386 substances, but without any indication which value is an AEGL, ERPG, or TEEL. The list was updated last time in 2012. On the other hand, Environmental Protection Agency (EPA) publishes a list of 176 final AEGLs for different exposition periods (10 min, 30 min, 60 min, 4 hr, 8 hr). These values are also recommended by the German Umweltbundesamt. Furthermore, there exist a lot of other similar values, e.g. IDLH (Immediately Dangerous to Life and Health), ERPG (Emergency Response Planning Guidelines), TEEL (Temporary Emergeny Exposure Limits), EEI (Emergency exposure indices), ARE (Acute Reference Exposure), Störfallbeurteilungswerte (SBW), Einsatztoleranzwerte (ETW) et al. So currently it does not seem to be advisable to include any of these lists in the GESTIS database.

Newtec Engineering A/S lab 29.01.2014 10:28:29
I have been looking for tellurium, CAS 13494-80-9 at your database, and as usual I compare with som MSDS from some different supplier. I can see that there is difference in labeling as Sigma and Kiros has signal word- danger, pictogram is different and H301. Hope that if it is wrong in your database, that you will change it. BW Elmedina Dervisevic
You find the answer under the classification in our database. GESTIS advice: Tellurium has been classified by some manufacturers to be "Toxic if swallowed", based on a LD50 = 83 mg/kg. However, this value has been determined for soluble tellurium compounds and is not valid for tellurium metal. Studies by TNO have shown definitely the LD50 (oral, rat) > 5000 mg/kg.

Jaime De Jesus/MEDA/MCH Consumer Healthcare 08.11.2013 18:36:47
Thank you for having this database so accesible and so well sorted with useful information.
Thank you for your complimentary remark. We are continiously working on the database to improve data quality. If you find any errors please do not hazitate to contact us.

Elmedina Dervisevic/Newtec Engineering laboratory 16.10.2013 11:20:19
Thank you very much for making the homepage that can help us to better understanding of the chemicals we are working with. It happens so often at supplier do not have those informations in MSDS and then it is nice to know where to look. Best wishes Elmedina
Many thanks for your commendation.

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