---
title: "ChesHaz - Reviews, Revenue and Downloads in United States | Apple App Store"
description: "This is a quick, free app to look up the four-digit "UN/NA" numbers on the hazmat placards affixed to highway and rail tankers.  The chemical names and other information is shown.  The main data is st"
---

# ChesHaz — United States
> Quick chemical hazmat id

![ChesHaz App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple128/v4/38/3f/6e/383f6e8f-44d9-220a-6cd9-e1facf0c07d2/AppIcon-0-1x_U007emarketing-0-0-GLES2_U002c0-512MB-sRGB-0-0-0-85-220-0-0-0-7.png/400x400bb.png)

**Developer:** [WIlliam Cheswick](https://apptail.io/developer/william-cheswick-NLqd)
**Category:** Reference
**Rating:** 5.0/5 (4 ratings)
**Price:** Free
**Bundle ID:** com.cheswick.ChesHaz
**Store:** Apple App Store
**Country:** United States
**Version:** 2.1 (released 2018-12-05)
**Original Release:** 2017-12-16

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/us/app/app/id1320963064)
**AppTail Page:** [https://apptail.io/app/cheshaz-zJJc/united-states](https://apptail.io/app/cheshaz-zJJc/united-states)

## ChesHaz Description
This is a quick, free app to look up the four-digit "UN/NA" numbers on the hazmat placards affixed to highway and rail tankers.  The chemical names and other information is shown.

The main data is stored off-line, so it is available when there is no network connectivity.  There are links to Wikipedia pages and official online information from NOAA in the US.

This app was written for educational purposes only. Though this data is carefully derived from official US government web pages and is believed to be presented accurately, first responders and other life savers should probably rely on hazmat apps from official sources.

## ChesHaz Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/Purple62/v4/b9/a7/fe/b9a7fe62-e3c6-1b36-dd62-0a89e9a57e43/pr_source.png/2048x2732.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/Purple62/v4/e1/d2/86/e1d286d4-97b1-634c-9ceb-cee442e588eb/pr_source.png/2048x2732.png)

## ChesHaz Rating Breakdown in United States
- 5 stars: 4 (100%)
- 4 stars: 0 (0%)
- 3 stars: 0 (0%)
- 2 stars: 0 (0%)
- 1 stars: 0 (0%)




## ChesHaz Discovered Keywords
- hazmat reference


## ChesHaz Available In
- [United States](https://apptail.io/app/cheshaz-zJJc/united-states)
- [Australia](https://apptail.io/app/cheshaz-zJJc/australia)
- [Azerbaijan](https://apptail.io/app/cheshaz-zJJc/azerbaijan)
- [Belgium](https://apptail.io/app/cheshaz-zJJc/belgium)
- [Brazil](https://apptail.io/app/cheshaz-zJJc/brazil)
- [Belarus](https://apptail.io/app/cheshaz-zJJc/belarus)
- [Canada](https://apptail.io/app/cheshaz-zJJc/canada)
- [Switzerland](https://apptail.io/app/cheshaz-zJJc/switzerland)
- [Chile](https://apptail.io/app/cheshaz-zJJc/chile)
- [China](https://apptail.io/app/cheshaz-zJJc/china)
- [Colombia](https://apptail.io/app/cheshaz-zJJc/colombia)
- [Czechia](https://apptail.io/app/cheshaz-zJJc/czechia)
- [Germany](https://apptail.io/app/cheshaz-zJJc/germany)
- [Denmark](https://apptail.io/app/cheshaz-zJJc/denmark)
- [Dominican Republic](https://apptail.io/app/cheshaz-zJJc/dominican-republic)
- [Algeria](https://apptail.io/app/cheshaz-zJJc/algeria)
- [Estonia](https://apptail.io/app/cheshaz-zJJc/estonia)
- [Egypt](https://apptail.io/app/cheshaz-zJJc/egypt)
- [Spain](https://apptail.io/app/cheshaz-zJJc/spain)
- [Finland](https://apptail.io/app/cheshaz-zJJc/finland)
- [France](https://apptail.io/app/cheshaz-zJJc/france)
- [United Kingdom](https://apptail.io/app/cheshaz-zJJc/united-kingdom)
- [Hong Kong SAR China](https://apptail.io/app/cheshaz-zJJc/hong-kong)
- [Indonesia](https://apptail.io/app/cheshaz-zJJc/indonesia)
- [Ireland](https://apptail.io/app/cheshaz-zJJc/ireland)
- [Israel](https://apptail.io/app/cheshaz-zJJc/israel)
- [India](https://apptail.io/app/cheshaz-zJJc/india)
- [Italy](https://apptail.io/app/cheshaz-zJJc/italy)
- [Japan](https://apptail.io/app/cheshaz-zJJc/japan)
- [South Korea](https://apptail.io/app/cheshaz-zJJc/south-korea)
- [Mexico](https://apptail.io/app/cheshaz-zJJc/mexico)
- [Nigeria](https://apptail.io/app/cheshaz-zJJc/nigeria)
- [Netherlands](https://apptail.io/app/cheshaz-zJJc/netherlands)
- [Norway](https://apptail.io/app/cheshaz-zJJc/norway)
- [Nepal](https://apptail.io/app/cheshaz-zJJc/nepal)
- [New Zealand](https://apptail.io/app/cheshaz-zJJc/new-zealand)
- [Peru](https://apptail.io/app/cheshaz-zJJc/peru)
- [Philippines](https://apptail.io/app/cheshaz-zJJc/philippines)
- [Pakistan](https://apptail.io/app/cheshaz-zJJc/pakistan)
- [Poland](https://apptail.io/app/cheshaz-zJJc/poland)
- [Romania](https://apptail.io/app/cheshaz-zJJc/romania)
- [Russia](https://apptail.io/app/cheshaz-zJJc/russia)
- [Saudi Arabia](https://apptail.io/app/cheshaz-zJJc/saudi-arabia)
- [Sweden](https://apptail.io/app/cheshaz-zJJc/sweden)
- [Thailand](https://apptail.io/app/cheshaz-zJJc/thailand)
- [Türkiye](https://apptail.io/app/cheshaz-zJJc/turkey)
- [Taiwan](https://apptail.io/app/cheshaz-zJJc/taiwan)
- [Ukraine](https://apptail.io/app/cheshaz-zJJc/ukraine)
- [Vietnam](https://apptail.io/app/cheshaz-zJJc/vietnam)
- [Austria](https://apptail.io/app/cheshaz-zJJc/austria)
- [South Africa](https://apptail.io/app/cheshaz-zJJc/south-africa)

---

## About AppTail

[AppTail](https://apptail.io) is a mobile app intelligence platform providing app analytics, ASO (App Store Optimization) tools, keyword tracking, competitor analysis, revenue estimates, and review monitoring for iOS App Store apps. Track your app's performance, discover ranking keywords, monitor competitors, and analyze market trends.

- [Search Apps](https://apptail.io)
- [Top Charts](https://apptail.io/top-iphone-apps)
- [Sign Up for Full Access](https://app.apptail.io/signup?utm_campaign=ai-crawl&utm_content=footer)

*Data provided by [AppTail](https://apptail.io) - Mobile App Intelligence Platform*